{"title":"Used MerCruiser Alpha Sterndrive Parts","description":"\u003cp\u003eGenuine used MerCruiser Alpha sterndrive parts removed from drives dismantled in our Kadina workshop. The range covers Alpha One Gen 1 and Gen 2 drives along with some earlier Pre-Alpha parts: complete Alpha Gen 2 sterndrives in 1.62:1 and 2.00:1 ratios, driveshaft housings, an upper unit, a gimbal housing and gimbal ring, and the square and splined steering shaft. The generation and gear ratio are in each title; match the part number and ratio to your drive before you order.\u003c\/p\u003e\u003cp\u003ePhotos are of the actual part, and the part number is in every title. Not sure it fits? Send us your engine model and serial number or call 0412 532 984 and we will confirm before you buy. Every used part has a 14-day return period.\u003c\/p\u003e\u003cp\u003eSee also \u003ca href=\"\/collections\/used-mercruiser-sterndrive-parts\"\u003eall used MerCruiser parts\u003c\/a\u003e, \u003ca href=\"\/collections\/all-used-marine-parts\"\u003eall used marine parts\u003c\/a\u003e, or \u003ca href=\"\/pages\/request-a-used-part\"\u003erequest a used part\u003c\/a\u003e you cannot see listed.\u003c\/p\u003e","products":[{"product_id":"9412a23-mercruiser-alpha-one-gen-one-driveshaft-housing-genuine-used-part","title":"9412A23 Mercruiser Alpha One Gen One Driveshaft Housing | Genuine Used Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n \u003cstrong\u003e\n  Genuine MerCruiser MC-I \/ R \/ MR \/ Alpha One Complete Driveshaft Housing - Part Number: 9412A23\n \u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine MerCruiser complete upper sterndrive housing with a 1.98:1 gear configuration for selected MC-I, R, MR and Alpha One Gen I drives.\n\u003c\/p\u003e\n\u003cp\u003e\n The assembly contains the upper gear set, universal-joint shaft, vertical driveshaft and related bearings and seals. It is primarily associated with MerCruiser inline-four engine packages.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine MerCruiser complete upper driveshaft housing\n \u003c\/li\u003e\n \u003cli\u003e\n  Correct part number 9412A23\n \u003c\/li\u003e\n \u003cli\u003e\n  1.98:1 complete-drive gear configuration\n \u003c\/li\u003e\n \u003cli\u003e\n  Fits MC-I, R, MR and Alpha One Gen I systems\n \u003c\/li\u003e\n \u003cli\u003e\n  Suitable for standard-rotation four-cylinder packages\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003ch3\u003e\n Commonly used on\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  MerCruiser MC-I sterndrives\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser R and MR drives\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser Alpha One Gen I drives\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Typically suits\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Engine models:\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 120HP 2.5L inline-four\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 120HP 3.0L inline-four\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 140HP 3.0L inline-four\n \u003c\/li\u003e\n \u003cli\u003e\n  Selected early MerCruiser inline-six applications using the correct short universal-joint yoke\n \u003c\/li\u003e\n \u003cli\u003e\n  Alpha One Gen I drives from approximately 1984-1990\n \u003c\/li\u003e\n \u003cli\u003e\n  Pre-1983 MC-I and R applications when fitted with the required yoke and matching lower unit\n \u003c\/li\u003e\n \u003cli\u003e\n  HP Range: Approximately 120HP - 165HP\n \u003c\/li\u003e\n \u003cli\u003e\n  Engine Type: MerCruiser inline-four and specified early inline-six petrol engine\n \u003c\/li\u003e\n \u003cli\u003e\n  Drive Type: MC-I \/ R \/ MR \/ Alpha One Gen I upper housing\n \u003c\/li\u003e\n \u003cli\u003e\n  Gear Ratio: 1.98:1 OEM configuration; aftermarket replacements may be identified as 1.94:1\n \u003c\/li\u003e\n \u003cli\u003e\n  Year Range: Approximately 1970s-1990, dependent on drive and universal-joint configuration\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n The driveshaft housing receives power from the engine coupler through the universal-joint shaft and transfers it through the upper bevel gears to the vertical driveshaft and lower gear housing.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Upper gears or bearings produce a whining or grinding noise\n \u003c\/li\u003e\n \u003cli\u003e\n  Universal-joint crosses are loose, rusty or seized\n \u003c\/li\u003e\n \u003cli\u003e\n  Gear oil leaks from the input or driveshaft seals\n \u003c\/li\u003e\n \u003cli\u003e\n  Water enters through failed bellows or sealing surfaces\n \u003c\/li\u003e\n \u003cli\u003e\n  Splines, gears or bearing surfaces show excessive wear\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  9412A23 → Supersedes 5523A65\n \u003c\/li\u003e\n \u003cli\u003e\n  5523A65 → Replaces earlier 3917A9 applications\n \u003c\/li\u003e\n \u003cli\u003e\n  9412A23 current reference for the applicable 1.98 upper assembly\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  9412A23\n \u003c\/li\u003e\n \u003cli\u003e\n  1547-9412A23\n \u003c\/li\u003e\n \u003cli\u003e\n  5523A65\n \u003c\/li\u003e\n \u003cli\u003e\n  1547-5523A65\n \u003c\/li\u003e\n \u003cli\u003e\n  3917A9\n \u003c\/li\u003e\n \u003cli\u003e\n  1547-3917A9\n \u003c\/li\u003e\n \u003cli\u003e\n  39385A1 short universal-joint yoke for applicable early installations\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Aftermarket \/ Verified Equivalents\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  SEI Marine: 90-104-01A upper unit\n \u003c\/li\u003e\n \u003cli\u003e\n  SEI Marine: SE106 1.94 replacement upper assembly\n \u003c\/li\u003e\n \u003cli\u003e\n  Specialist remanufactured 9412A23 upper driveshaft housing\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine used part\n \u003c\/li\u003e\n \u003cli\u003e\n  Removed from running drive where applicable\n \u003c\/li\u003e\n \u003cli\u003e\n  In good working condition unless otherwise stated\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53388274696484,"sku":"921439J","price":850.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_2f61442e-f6d0-4519-93fd-b3f8d1032b7a.jpg?v=1788099805"},{"product_id":"861063a10-1-62-1-and-2-00-1-mercruiser-drives-haft-housing-alpha-1-gen-2-genuine-used-part","title":"861063a10 1.62:1 and 2.00:1 mercruiser driveshaft housing alpha 1 gen 2 | Genuine Used Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n \u003cstrong\u003e\n  Genuine MerCruiser Alpha One Gen II Complete Upper Driveshaft Housing - Part Number: 861063A10\n \u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine MerCruiser Alpha One Gen II upper drive assembly used with both 1.62:1 and 2.00:1 complete sterdrive configurations.\n\u003c\/p\u003e\n\u003cp\u003e\n The assembly contains the upper gear set, vertical driveshaft, universal-joint assembly and shift-shaft components. The final complete-drive ratio depends on the matched lower unit and gear configuration.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine MerCruiser Alpha One Gen II upper unit\n \u003c\/li\u003e\n \u003cli\u003e\n  Correct part number 861063A10\n \u003c\/li\u003e\n \u003cli\u003e\n  Suitable for 1.62 and 2.00 complete-drive ratios\n \u003c\/li\u003e\n \u003cli\u003e\n  Includes the upper gear and universal-joint housing\n \u003c\/li\u003e\n \u003cli\u003e\n  Fits standard Alpha One Gen II transom assemblies\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003ch3\u003e\n Commonly used on\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  MerCruiser Alpha One Gen II sterndrives\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Typically suits\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Engine and drive models:\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 4.3L V6 with 1.62:1 Alpha Gen II drive\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 4.3LX V6 with 1.62:1 Alpha Gen II drive\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 3.0L four-cylinder with 2.00:1 Alpha Gen II drive\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 3.0LX with 2.00:1 Alpha Gen II drive\n \u003c\/li\u003e\n \u003cli\u003e\n  Alpha One Gen II serial 0D469859 and above\n \u003c\/li\u003e\n \u003cli\u003e\n  HP Range: Approximately 120HP - 300HP, dependent on complete-drive configuration\n \u003c\/li\u003e\n \u003cli\u003e\n  Drive Type: Alpha One Gen II upper driveshaft housing\n \u003c\/li\u003e\n \u003cli\u003e\n  Complete-Drive Ratios: 1.62:1 and 2.00:1\n \u003c\/li\u003e\n \u003cli\u003e\n  Year Range: 1991 onward\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n The upper unit transfers power from the engine coupler through the universal joint and upper bevel gears to the vertical driveshaft. It also carries the upper shift and lubrication passages connecting the drive's upper and lower sections.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Whining, rumbling or knocking from the upper gears\n \u003c\/li\u003e\n \u003cli\u003e\n  Universal joints have play, rust or stiffness\n \u003c\/li\u003e\n \u003cli\u003e\n  Gear oil leaks from the input or driveshaft seals\n \u003c\/li\u003e\n \u003cli\u003e\n  Water contamination from damaged bellows or seals\n \u003c\/li\u003e\n \u003cli\u003e\n  Upper gears, bearings or splines show excessive wear\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  861063A10 current complete upper driveshaft-housing reference\n \u003c\/li\u003e\n \u003cli\u003e\n  1547-861063A10 formatted assembly reference\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  861063A10\n \u003c\/li\u003e\n \u003cli\u003e\n  1547-861063A10\n \u003c\/li\u003e\n \u003cli\u003e\n  815930A5 related earlier upper-housing reference\n \u003c\/li\u003e\n \u003cli\u003e\n  5121300TP related complete 1.62 sterndrive\n \u003c\/li\u003e\n \u003cli\u003e\n  5121600TP related complete 2.00 sterndrive\n \u003c\/li\u003e\n \u003cli\u003e\n  Alpha One Gen II standard-rotation lower gear housing\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Aftermarket \/ Verified Equivalents\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  SEI Marine: 90-116-01C upper driveshaft housing\n \u003c\/li\u003e\n \u003cli\u003e\n  SEI Marine: SE116 Alpha One Gen II upper unit\n \u003c\/li\u003e\n \u003cli\u003e\n  Specialist remanufactured 861063A10 upper assembly\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine used part\n \u003c\/li\u003e\n \u003cli\u003e\n  Removed from running drive where applicable\n \u003c\/li\u003e\n \u003cli\u003e\n  In good working condition unless otherwise stated\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53388320112932,"sku":"V678534","price":1000.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_3ee7fd73-93ea-480d-8b47-dbe0077c6e06.jpg?v=1788096459"},{"product_id":"88302a2-mercruiser-alpha-pre-alpha-square-splined-steering-shaft-genuine-used-part","title":"88302A2 Mercruiser Alpha\/Pre-Alpha Square\/Splined Steering Shaft | Genuine Used Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n \u003cstrong\u003e\n  Genuine MerCruiser Square-to-Splined Upper Steering Shaft - Part Number: 88302A2\n \u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine used MerCruiser upper steering shaft for selected pre-Alpha and early Alpha transom systems.\n\u003c\/p\u003e\n\u003cp\u003e\n The shaft uses a square lower connection at the gimbal ring and a splined upper connection at the steering lever. This configuration must be matched exactly because later Alpha and Bravo systems use different shaft and lever designs.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine Mercury MerCruiser OEM upper steering shaft\n \u003c\/li\u003e\n \u003cli\u003e\n  Correct part number 88302A2\n \u003c\/li\u003e\n \u003cli\u003e\n  Square lower connection and splined upper connection\n \u003c\/li\u003e\n \u003cli\u003e\n  Used on selected pre-Alpha and early Alpha transom assemblies\n \u003c\/li\u003e\n \u003cli\u003e\n  Transfers steering-lever movement into the gimbal ring\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003ch3\u003e\n Commonly used on\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  MerCruiser pre-Alpha and early Alpha steering systems\n \u003c\/li\u003e\n \u003cli\u003e\n  Transom assemblies using the square-lower \/ splined-upper shaft\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Typically suits\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Engine models:\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser pre-Alpha transom assemblies from approximately 1976-1982\n \u003c\/li\u003e\n \u003cli\u003e\n  Early R \/ MR \/ Alpha One Gen I assemblies where the square \/ splined configuration is shown\n \u003c\/li\u003e\n \u003cli\u003e\n  Inline-four, inline-six and V8 sterndrive installations using the matching early steering lever and gimbal ring\n \u003c\/li\u003e\n \u003cli\u003e\n  HP Range: Engine-family controlled\n \u003c\/li\u003e\n \u003cli\u003e\n  Engine Type: MerCruiser pre-Alpha \/ early Alpha sterndrive transom system\n \u003c\/li\u003e\n \u003cli\u003e\n  Year Range: Approximately 1976 - 1990, configuration controlled\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n The upper shaft joins the steering lever to the gimbal ring. It transmits steering torque through its splined upper end and square lower end while rotating in the gimbal-housing bushes.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Splines or square drive are worn\n \u003c\/li\u003e\n \u003cli\u003e\n  Shaft is bent or heavily corroded\n \u003c\/li\u003e\n \u003cli\u003e\n  Steering has excess free play\n \u003c\/li\u003e\n \u003cli\u003e\n  Bush and seal surfaces are grooved\n \u003c\/li\u003e\n \u003cli\u003e\n  Shaft seizes in the housing\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  88302A2 current known square \/ splined shaft reference\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  88302A2\n \u003c\/li\u003e\n \u003cli\u003e\n  88302\n \u003c\/li\u003e\n \u003cli\u003e\n  88301 \/ 88301S related early gimbal ring\n \u003c\/li\u003e\n \u003cli\u003e\n  88302A1 related complete gimbal-ring assembly\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser square \/ splined steering shaft\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Aftermarket \/ Verified Equivalents\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  No aftermarket equivalent\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine used part\n \u003c\/li\u003e\n \u003cli\u003e\n  Removed from running engine where applicable\n \u003c\/li\u003e\n \u003cli\u003e\n  In good working condition unless otherwise stated\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53388577997092,"sku":"4991258","price":55.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_657fb679-24d1-4717-9aea-887722baee7c.jpg?v=1788103459"},{"product_id":"1547-5523a18-mercruiser-pre-alpha-upper-unit-genuine-used-part","title":"1547-5523a18 Mercruiser Pre-Alpha Upper Unit | Genuine Used Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n \u003cstrong\u003e\n  Genuine MerCruiser Pre-Alpha Upper Gearcase Housing - Part Number: 1547-5523A18\n \u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine used MerCruiser upper-drive housing for selected early Pre-Alpha stern-drive assemblies.\n\u003c\/p\u003e\n\u003cp\u003e\n The housing forms the structural upper gearcase that supports the vertical drive shaft, input gear set, bearing assemblies, universal-joint connection and upper drive cap.\n\u003c\/p\u003e\n\u003cp\u003e\n This listing should be matched by casting number, gearcase design, input-shaft arrangement and drive ratio before installation.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine used MerCruiser Pre-Alpha upper housing\n \u003c\/li\u003e\n \u003cli\u003e\n  Correct assembly \/ casting reference 1547-5523A18\n \u003c\/li\u003e\n \u003cli\u003e\n  Early stern-drive upper gearcase configuration\n \u003c\/li\u003e\n \u003cli\u003e\n  Suitable for rebuilding an original Pre-Alpha drive\n \u003c\/li\u003e\n \u003cli\u003e\n  Housing-only or assembled condition as shown in the product listing\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003ch3\u003e\n Commonly used on\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Early MerCruiser Pre-Alpha stern drives\n \u003c\/li\u003e\n \u003cli\u003e\n  Upper-drive assemblies fitted before the Alpha One designation\n \u003c\/li\u003e\n \u003cli\u003e\n  Four-cylinder and selected early six-cylinder drive packages depending on ratio and gear set\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Typically suits\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Drive families:\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser MC-I \/ Pre-Alpha drives\n \u003c\/li\u003e\n \u003cli\u003e\n  Early MerCruiser No. 1 stern drives using housing 5523A18\n \u003c\/li\u003e\n \u003cli\u003e\n  Selected 120HP and 140HP four-cylinder packages\n \u003c\/li\u003e\n \u003cli\u003e\n  Selected early inline-six and V6 packages when fitted with the correct gears, bearings and input shaft\n \u003c\/li\u003e\n \u003cli\u003e\n  Applications requiring direct casting-number confirmation\n \u003c\/li\u003e\n \u003cli\u003e\n  Engine Type: MerCruiser petrol sterndrive\n \u003c\/li\u003e\n \u003cli\u003e\n  Drive Type: Pre-Alpha \/ early MerCruiser No. 1 upper gearcase\n \u003c\/li\u003e\n \u003cli\u003e\n  Year Range: Approximately 1960s through early 1980s\n \u003c\/li\u003e\n \u003cli\u003e\n  Fitment Control: Casting number, drive serial number and gear ratio must match\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n The upper housing supports the input and vertical drive gears that transfer engine power through the universal-joint shaft into the lower drive unit.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Bearing bores are worn or damaged\n \u003c\/li\u003e\n \u003cli\u003e\n  Housing is cracked after impact or gear failure\n \u003c\/li\u003e\n \u003cli\u003e\n  Gear lubricant leaks from damaged sealing surfaces\n \u003c\/li\u003e\n \u003cli\u003e\n  Corrosion develops around the water passage or bearing carrier\n \u003c\/li\u003e\n \u003cli\u003e\n  Upper gears are noisy or have excessive backlash\n \u003c\/li\u003e\n \u003cli\u003e\n  Input or vertical shaft bearings fail\n \u003c\/li\u003e\n \u003cli\u003e\n  Mounting or cap threads are stripped\n \u003c\/li\u003e\n \u003cli\u003e\n  Housing has internal damage from broken gears\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  1547-5523A18 original Pre-Alpha upper-gearcase housing reference\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  1547-5523A18\n \u003c\/li\u003e\n \u003cli\u003e\n  5523A18\n \u003c\/li\u003e\n \u003cli\u003e\n  1547-5523\n \u003c\/li\u003e\n \u003cli\u003e\n  Related early MerCruiser Pre-Alpha upper-unit housing family\n \u003c\/li\u003e\n \u003cli\u003e\n  1547-9412A18 related later Alpha \/ MR-style upper housing\n \u003c\/li\u003e\n \u003cli\u003e\n  1547-3546A9 related four-cylinder Pre-Alpha upper-unit assembly\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Aftermarket \/ Verified Equivalents\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Aftermarket complete Pre-Alpha replacement upper units are application and ratio dependent\n \u003c\/li\u003e\n \u003cli\u003e\n  Aftermarket bearings, seals, gears and universal-joint components are available separately\n \u003c\/li\u003e\n \u003cli\u003e\n  No direct aftermarket equivalent known for the bare 5523A18 housing\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine used part\n \u003c\/li\u003e\n \u003cli\u003e\n  Verify whether Volvo Penta includes internal gears and components or the empty housing only\n \u003c\/li\u003e\n \u003cli\u003e\n  Removed from running drive where applicable\n \u003c\/li\u003e\n \u003cli\u003e\n  In good working condition unless otherwise stated\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53392229892388,"sku":"1744227","price":225.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_a8ba5f83-f216-4335-b2c6-cbcf8700beef.jpg?v=1777260313"},{"product_id":"5121600lp-5121600tp-mercruiser-alpha-gen-2-complete-sterndrive-2-00-1-standard-rotation-genuine-used-part","title":"5121600LP 5121600TP Mercruiser Alpha Gen 2 Complete Sterndrive 2.00:1 Standard Rotation | Genuine Used Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n \u003cstrong\u003e\n  Genuine MerCruiser Alpha One Gen II Complete Sterndrive - Part Number: 5121600TP\n \u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine MerCruiser Alpha One Gen II complete sterndrive with a 2.00:1 reduction ratio and standard right-hand propeller rotation.\n\u003c\/p\u003e\n\u003cp\u003e\n The 2.00 ratio is primarily used with MerCruiser 2.5L and 3.0L four-cylinder petrol engines, providing the deeper reduction required for the engine's operating range and propeller loading.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine MerCruiser Alpha One Gen II complete drive\n \u003c\/li\u003e\n \u003cli\u003e\n  Current part number 5121600TP\n \u003c\/li\u003e\n \u003cli\u003e\n  Supersedes original 5121600LP configuration\n \u003c\/li\u003e\n \u003cli\u003e\n  2.00:1 ratio with standard rotation\n \u003c\/li\u003e\n \u003cli\u003e\n  Complete upper and lower sterndrive assembly\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003ch3\u003e\n Commonly used on\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  MerCruiser Alpha One Gen II four-cylinder sterndrive packages\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Typically suits\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Engine models:\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 2.5L 120HP\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 3.0L 130HP\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 3.0LX\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 3.0L 135HP\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 3.0L 140HP\n \u003c\/li\u003e\n \u003cli\u003e\n  Alpha One Gen II serial ranges beginning at 0D469859\n \u003c\/li\u003e\n \u003cli\u003e\n  1998-and-newer replacement applications from serial 0L100040 and above\n \u003c\/li\u003e\n \u003cli\u003e\n  HP Range: Approximately 120HP - 140HP\n \u003c\/li\u003e\n \u003cli\u003e\n  Engine Type: MerCruiser inline-four petrol sterndrive engine\n \u003c\/li\u003e\n \u003cli\u003e\n  Drive Type: Alpha One Gen II standard rotation\n \u003c\/li\u003e\n \u003cli\u003e\n  Gear Ratio: 2.00:1\n \u003c\/li\u003e\n \u003cli\u003e\n  Year Range: 1991 onward, dependent on serial number\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n The drive transmits engine power to the propeller, provides forward and reverse gear selection, supplies cooling water to the engine and allows steering, trim and trailering movement.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Water-contaminated or metallic gear lubricant\n \u003c\/li\u003e\n \u003cli\u003e\n  Grinding, whining or rumbling from the upper or lower gears\n \u003c\/li\u003e\n \u003cli\u003e\n  Difficult or incomplete gear engagement\n \u003c\/li\u003e\n \u003cli\u003e\n  Excessive universal-joint or gimbal-bearing vibration\n \u003c\/li\u003e\n \u003cli\u003e\n  Gear oil leaking around the propeller shaft or driveshaft\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  5121600TP → Supersedes 5121600LP\n \u003c\/li\u003e\n \u003cli\u003e\n  5121600TP → Replaces earlier 5121500LP 1.94-ratio service applications\n \u003c\/li\u003e\n \u003cli\u003e\n  5121600TP current 1998-and-newer service configuration\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  5-5121600TP\n \u003c\/li\u003e\n \u003cli\u003e\n  5121600TP\n \u003c\/li\u003e\n \u003cli\u003e\n  5-5121600LP\n \u003c\/li\u003e\n \u003cli\u003e\n  5121600LP\n \u003c\/li\u003e\n \u003cli\u003e\n  5121500LP\n \u003c\/li\u003e\n \u003cli\u003e\n  5-51100007P Quicksilver 2.00 standard-rotation drive\n \u003c\/li\u003e\n \u003cli\u003e\n  861063A10 related 1.62 \/ 2.00 upper driveshaft housing\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Aftermarket \/ Verified Equivalents\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Quicksilver: 5-51100007P Alpha Gen II 2.00 replacement drive\n \u003c\/li\u003e\n \u003cli\u003e\n  SEI Marine: SE116 complete sterndrive, 2.00 ratio\n \u003c\/li\u003e\n \u003cli\u003e\n  SEI Marine: 90-116-series Alpha Gen II replacement assemblies\n \u003c\/li\u003e\n \u003cli\u003e\n  Specialist remanufactured 5121600TP \/ 5121600LP sterndrive\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine used part\n \u003c\/li\u003e\n \u003cli\u003e\n  Removed from running drive where applicable\n \u003c\/li\u003e\n \u003cli\u003e\n  In good working condition unless otherwise stated\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53392229957924,"sku":"G905487","price":1400.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_b5a336ed-8a90-4b51-bd2c-1e38c1947979.jpg?v=1788093626"},{"product_id":"43881a14-43880-c4-mercruiser-gimble-housing-alpha-gen-2-genuine-used-part","title":"43881A14 43880-C4 Mercruiser Gimble housing Alpha Gen 2 | Genuine Used Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n \u003cstrong\u003e\n  Genuine MerCruiser Alpha One Gen II Gimbal Housing Assembly - Part Number: 43881A14\n \u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine used MerCruiser Alpha One Gen II gimbal housing carrying casting identification 43880-C4.\n\u003c\/p\u003e\n\u003cp\u003e\n The housing mounts through the transom and supports the Gen II gimbal ring, bell housing, steering components, gimbal bearing, bellows and gear-lube fittings.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine Mercury MerCruiser OEM Alpha Gen II gimbal housing\n \u003c\/li\u003e\n \u003cli\u003e\n  Correct service number 43881A14\n \u003c\/li\u003e\n \u003cli\u003e\n  Associated casting number 43880-C4\n \u003c\/li\u003e\n \u003cli\u003e\n  Used on Alpha One Gen II transom systems\n \u003c\/li\u003e\n \u003cli\u003e\n  Superseded by updated housing 8M0062568\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003ch3\u003e\n Commonly used on\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  MerCruiser Alpha One Gen II transom assemblies\n \u003c\/li\u003e\n \u003cli\u003e\n  Mechanical- and power-steering Gen II installations\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Typically suits\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Engine models:\n \u003c\/li\u003e\n \u003cli\u003e\n  Alpha One Gen II - 1991-1995, serial 0D469859 to 0F679999\n \u003c\/li\u003e\n \u003cli\u003e\n  Alpha One Gen II - 1996-1997, serial 0F680000 to 0K999999\n \u003c\/li\u003e\n \u003cli\u003e\n  Alpha One Gen II - 1998 and later, serial 0L100040 and above when the updated fitting configuration is matched\n \u003c\/li\u003e\n \u003cli\u003e\n  43880-C4 \/ 43881A14 housing commonly associated with 1996 and later service applications\n \u003c\/li\u003e\n \u003cli\u003e\n  HP Range: Engine-family controlled\n \u003c\/li\u003e\n \u003cli\u003e\n  Engine Type: MerCruiser Alpha One Gen II sterndrive transom system\n \u003c\/li\u003e\n \u003cli\u003e\n  Year Range: 1991 onward, serial and gear-lube fitting controlled\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n The housing provides the fixed transom structure for the gimbal ring and bell housing. It carries steering and drive loads and supports the bearing, bellows, water and gear-lube connections.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Housing is cracked, corroded or distorted\n \u003c\/li\u003e\n \u003cli\u003e\n  Gimbal-bearing bore is worn\n \u003c\/li\u003e\n \u003cli\u003e\n  Gear-lube fitting or passage is damaged\n \u003c\/li\u003e\n \u003cli\u003e\n  Pivot or steering mount has excess play\n \u003c\/li\u003e\n \u003cli\u003e\n  Bellows sealing surfaces leak\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  8M0062568 → Supersedes 43881A14\n \u003c\/li\u003e\n \u003cli\u003e\n  43881A14 earlier Gen II housing reference\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  43881A14\n \u003c\/li\u003e\n \u003cli\u003e\n  43880-C4\n \u003c\/li\u003e\n \u003cli\u003e\n  43881A8\n \u003c\/li\u003e\n \u003cli\u003e\n  43881A11\n \u003c\/li\u003e\n \u003cli\u003e\n  43881A16\n \u003c\/li\u003e\n \u003cli\u003e\n  816461A2 related Gen II assembly\n \u003c\/li\u003e\n \u003cli\u003e\n  8M0062568 current updated housing\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Aftermarket \/ Verified Equivalents\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Recmar: RM43881A14\n \u003c\/li\u003e\n \u003cli\u003e\n  Boat-Parts: BPO-43881A14 aftermarket gimbal housing\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine used part\n \u003c\/li\u003e\n \u003cli\u003e\n  Removed from running engine where applicable\n \u003c\/li\u003e\n \u003cli\u003e\n  In good working condition unless otherwise stated\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53392236904740,"sku":"3546652","price":475.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_49cd561a-ca9c-4157-919b-4e534bd062f1.jpg?v=1788091663"},{"product_id":"88301-88301s-mercruiser-pre-alpha-gimble-ring-genuine-used-part","title":"88301 88301S Mercruiser Pre Alpha Gimble Ring | Genuine Used Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n \u003cstrong\u003e\n  Genuine MerCruiser Pre-Alpha Gimbal Ring - Part Number: 88301 \/ 88301S\n \u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine used MerCruiser gimbal ring for pre-Alpha transom assemblies.\n\u003c\/p\u003e\n\u003cp\u003e\n The ring supports the sterndrive between its upper and lower steering pivots and allows both steering movement and trim \/ tilt articulation. The 88301S identification is associated with this early ring family.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine Mercury MerCruiser OEM pre-Alpha gimbal ring\n \u003c\/li\u003e\n \u003cli\u003e\n  Original references 88301 and 88301S\n \u003c\/li\u003e\n \u003cli\u003e\n  Used with the early square \/ splined steering-shaft arrangement\n \u003c\/li\u003e\n \u003cli\u003e\n  Supports sterndrive steering and trim movement\n \u003c\/li\u003e\n \u003cli\u003e\n  Applicable to 1970s and early-1980s transom assemblies\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003ch3\u003e\n Commonly used on\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  MerCruiser pre-Alpha transom assemblies\n \u003c\/li\u003e\n \u003cli\u003e\n  Early MC-I and related sterndrive steering systems\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Typically suits\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Engine models:\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser pre-Alpha 120HP and 140HP inline-four installations\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser pre-Alpha 165HP inline-six installations\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser pre-Alpha 228HP, 260HP and 898 V8 installations\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 470 and 485 four-cylinder installations using the early gimbal-ring system\n \u003c\/li\u003e\n \u003cli\u003e\n  HP Range: Engine-family controlled\n \u003c\/li\u003e\n \u003cli\u003e\n  Engine Type: MerCruiser pre-Alpha sterndrive transom system\n \u003c\/li\u003e\n \u003cli\u003e\n  Year Range: Approximately 1976 - 1982\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n The gimbal ring carries the sterndrive and transfers steering movement from the upper shaft while allowing the drive to trim and tilt on its hinge pins.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Upper steering connection is worn\n \u003c\/li\u003e\n \u003cli\u003e\n  Hinge-pin bores have excess play\n \u003c\/li\u003e\n \u003cli\u003e\n  Ring is cracked or heavily corroded\n \u003c\/li\u003e\n \u003cli\u003e\n  Drive moves from side to side independently of the steering lever\n \u003c\/li\u003e\n \u003cli\u003e\n  Trim movement binds at the pivots\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  88301 \/ 88301S early OEM gimbal-ring references\n \u003c\/li\u003e\n \u003cli\u003e\n  88302A1 related later complete early-style gimbal-ring assembly\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  88301\n \u003c\/li\u003e\n \u003cli\u003e\n  88301S\n \u003c\/li\u003e\n \u003cli\u003e\n  88302A1 related gimbal-ring assembly\n \u003c\/li\u003e\n \u003cli\u003e\n  88302A2 related square \/ splined upper shaft\n \u003c\/li\u003e\n \u003cli\u003e\n  Pre-Alpha gimbal ring\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Aftermarket \/ Verified Equivalents\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  No aftermarket equivalent\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine used part\n \u003c\/li\u003e\n \u003cli\u003e\n  Removed from running engine where applicable\n \u003c\/li\u003e\n \u003cli\u003e\n  In good working condition unless otherwise stated\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53392293364004,"sku":"T117704","price":175.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_e5ad2ca5-ad33-4d7f-9de5-5adc0fee1e67.jpg?v=1788103471"},{"product_id":"5121300lp-5121300tp-mercruiser-alpha-gen-2-complete-sterndrive-1-62-1-standard-rotation-genuine-used-part","title":"5121300LP 5121300TP Mercruiser Alpha Gen 2 Complete Sterndrive 1.62:1 Standard Rotation | Genuine Used Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n \u003cstrong\u003e\n  Genuine MerCruiser Alpha One Gen II Complete Sterndrive - Part Number: 5121300TP\n \u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine MerCruiser Alpha One Gen II complete sterndrive with a 1.62:1 overall reduction ratio and standard right-hand propeller rotation.\n\u003c\/p\u003e\n\u003cp\u003e\n This ratio is commonly paired with MerCruiser 4.3L V6 petrol engines. The complete drive combines the upper driveshaft housing, universal-joint assembly, lower gear housing, water pump and shift system.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine MerCruiser Alpha One Gen II complete drive\n \u003c\/li\u003e\n \u003cli\u003e\n  Current part number 5121300TP\n \u003c\/li\u003e\n \u003cli\u003e\n  Original service reference 5121300LP\n \u003c\/li\u003e\n \u003cli\u003e\n  1.62:1 ratio with standard rotation\n \u003c\/li\u003e\n \u003cli\u003e\n  Suitable for petrol engines rated up to the Alpha drive's approved capacity\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003ch3\u003e\n Commonly used on\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  MerCruiser Alpha One Gen II sterndrive installations\n \u003c\/li\u003e\n \u003cli\u003e\n  Standard-rotation single- and twin-engine applications\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Typically suits\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Engine models:\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 4.3L V6\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 4.3LX V6\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 4.3L EFI\n \u003c\/li\u003e\n \u003cli\u003e\n  MerCruiser 4.3L MPI\n \u003c\/li\u003e\n \u003cli\u003e\n  Selected MerCruiser 4.5L packages factory-specified with a 1.62 Alpha drive\n \u003c\/li\u003e\n \u003cli\u003e\n  Alpha One Gen II serial ranges beginning at 0D469859\n \u003c\/li\u003e\n \u003cli\u003e\n  1998-and-newer replacement applications from serial 0L100040 and above\n \u003c\/li\u003e\n \u003cli\u003e\n  HP Range: Approximately 175HP - 250HP\n \u003c\/li\u003e\n \u003cli\u003e\n  Engine Type: MerCruiser V6 petrol sterndrive engine\n \u003c\/li\u003e\n \u003cli\u003e\n  Drive Type: Alpha One Gen II standard rotation\n \u003c\/li\u003e\n \u003cli\u003e\n  Gear Ratio: 1.62:1\n \u003c\/li\u003e\n \u003cli\u003e\n  Year Range: 1991 onward, dependent on serial number\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n The sterndrive transfers engine power through the universal joint and upper gears to the lower gear housing and propeller shaft. It also provides forward, neutral and reverse selection, engine cooling-water pickup, steering and power-trim movement.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Milky gear oil or water entering the drive\n \u003c\/li\u003e\n \u003cli\u003e\n  Gear or bearing noise under acceleration\n \u003c\/li\u003e\n \u003cli\u003e\n  Drive slips or jumps out of forward or reverse\n \u003c\/li\u003e\n \u003cli\u003e\n  Universal-joint vibration or knocking while steering\n \u003c\/li\u003e\n \u003cli\u003e\n  Oil leaking from the propeller shaft, driveshaft or shift-shaft seals\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  5121300TP → Supersedes 5121300LP\n \u003c\/li\u003e\n \u003cli\u003e\n  5121300LP → Replaces earlier 5010162JP complete-drive applications\n \u003c\/li\u003e\n \u003cli\u003e\n  5121300TP current 1998-and-newer service configuration\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  5-5121300TP\n \u003c\/li\u003e\n \u003cli\u003e\n  5121300TP\n \u003c\/li\u003e\n \u003cli\u003e\n  5-5121300LP\n \u003c\/li\u003e\n \u003cli\u003e\n  5121300LP\n \u003c\/li\u003e\n \u003cli\u003e\n  5010162JP\n \u003c\/li\u003e\n \u003cli\u003e\n  861063A10 related 1.62 \/ 2.00 upper driveshaft housing\n \u003c\/li\u003e\n \u003cli\u003e\n  Alpha One Gen II standard-rotation lower unit\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n Aftermarket \/ Verified Equivalents\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  SEI Marine: SE116 complete sterndrive, 1.62 ratio\n \u003c\/li\u003e\n \u003cli\u003e\n  SEI Marine: 90-116-series Alpha Gen II replacement assemblies\n \u003c\/li\u003e\n \u003cli\u003e\n  Specialist remanufactured 5121300TP \/ 5121300LP sterndrive\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine used part\n \u003c\/li\u003e\n \u003cli\u003e\n  Removed from running drive where applicable\n \u003c\/li\u003e\n \u003cli\u003e\n  In good working condition unless otherwise stated\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53392327541028,"sku":"470166D","price":1400.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_43c677f8-ecd4-4e5e-8f1c-1f49d81a2d9b.jpg?v=1788093682"}],"url":"https:\/\/www.sawleysautoandmarine.com.au\/collections\/used-mercruiser-alpha-sterndrive-parts.oembed","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}