{"product_id":"12-20553-mercury-mercruiser-washer-genuine-quicksilver-oem-part","title":"12-20553 Mercury MerCruiser Washer | Genuine Quicksilver OEM Part","description":"\u003cp\u003e\n 🔧 Product Description\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Genuine Quicksilver Powerhead Stud Washer - Part Number: 12-20553\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Quicksilver plain washer used on Mercury and Mariner powerhead stud, exhaust plate and driveshaft housing assemblies. This .406 x .734 x .063 washer is commonly used with powerhead stud nuts on inline, V6, EFI, DFI \/ OptiMax, Jet and Racing outboard applications.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n ⚙️ Key Features\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Quicksilver OEM washer\n\u003c\/p\u003e\n\u003cp\u003e\n • Correct Mercury part number 12-20553\n\u003c\/p\u003e\n\u003cp\u003e\n • Size: .406 x .734 x .063\n\u003c\/p\u003e\n\u003cp\u003e\n • Common powerhead stud washer application\n\u003c\/p\u003e\n\u003cp\u003e\n • Replaces earlier 12-25970 washer reference in selected diagrams\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM Supersession Chain:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 12-20553 → Replaces 12-25970 where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • 12-25970 earlier powerhead stud washer reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM \/ Related Numbers:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 12-20553\n\u003c\/p\u003e\n\u003cp\u003e\n • 20553\n\u003c\/p\u003e\n\u003cp\u003e\n • 12-25970 related earlier washer reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 11-69254 related powerhead stud nut\n\u003c\/p\u003e\n\u003cp\u003e\n • 27-991734 related driveshaft housing gasket\n\u003c\/p\u003e\n\u003cp\u003e\n • 27-991764 related powerhead gasket\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Aftermarket \/ Verified Equivalents:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • No direct aftermarket equivalent preferred over OEM for powerhead stud hardware\n\u003c\/p\u003e\n\u003cp\u003e\n • OMC \/ Volvo \/ other cross-reference listings exist for selected non-Mercury V6 screw washer applications, but Mercury fitment should be confirmed by diagram\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🚤 Compatibility\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Commonly used on:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury \/ Mariner powerhead stud washer applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V6 exhaust manifold and exhaust plate assemblies\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury driveshaft housing and exhaust tube assemblies\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine models:\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 90HP 6-cylinder - serial 7208848 and up, powerhead stud washer applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 1150 \/ 115HP inline - serial 8051950 to 8061119, powerhead stud washer applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 140HP inline - serial 7150413 and up, powerhead stud washer applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 - serial 0D082000 to 0G303045\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 - serial 0G303046 to 0G760299\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 - serial 0G760300 to 0G960499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 - serial 0G960500 to 1B226999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 EFI 2.5L - serial 0T409000 to 0T800999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 EFI 2.5L - serial 0T801000 to 1B226999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 EFI 2.5L - serial 1B227000 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 DFI 2.5L - serial 0G590000 to 0G760299\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 DFI 2.5L - serial 0G760300 to 0G960499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 DFI 2.5L - serial 0G960500 to 0T178499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 DFI 2.5L - serial 0T178500 to 0T800999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 DFI 2.5L - serial 0T801000 to 1B226999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 DFI 2.5L - serial 1B227000 to 1B417701\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 DFI 2.5L - serial 1B417702 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 - serial 4301235 to 0C100860\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 - serial 8058870 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 - serial 0D082000 to 0G303045\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 - serial 0G303046 to 0G760299\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 - serial 0G760300 to 0G960499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 EFI - serial 0G303046 to 0G760299\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 EFI - serial 0G760300 to 0G960499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 EFI - serial 0G960500 to 0T408999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 DFI 2.5L - serial 0T178500 to 0T800999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 DFI 2.5L - serial 0T801000 to 1B226999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 DFI 2.5L - serial 1B227000 to 1B417701\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 - serial 0C100861 to 0C291519, powerhead stud washer applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 105 Jet \/ 140 Jet V6 applications where 12-20553 is specified\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury Racing 200XS and related 2.5L high-performance applications where 12-20553 is specified\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: Mercury \/ Mariner inline, V6 2-stroke, EFI, DFI \/ OptiMax, Jet and Racing outboard applications\n\u003c\/p\u003e\n\u003cp\u003e\n • System Type: Powerhead stud washer \/ driveshaft housing and exhaust plate hardware\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔌 Function\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n The washer spreads the clamping load under the powerhead stud nut, helping secure the powerhead, exhaust plate or driveshaft housing joint without damaging the mounting surface.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Common signs replacement is needed:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Washer missing during powerhead removal\n\u003c\/p\u003e\n\u003cp\u003e\n • Washer corroded, distorted or flattened\n\u003c\/p\u003e\n\u003cp\u003e\n • Powerhead stud hardware service required\n\u003c\/p\u003e\n\u003cp\u003e\n • Exhaust plate or driveshaft housing service required\n\u003c\/p\u003e\n\u003cp\u003e\n • Incorrect washer previously fitted\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 📦 Condition\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Quicksilver part\n\u003c\/p\u003e\n\u003cp\u003e\n • Brand new\n\u003c\/p\u003e\n\u003cp\u003e\n • Supplied in original or equivalent packaging\n\u003c\/p\u003e\n","brand":"Quicksilver","offers":[{"title":"Default Title","offer_id":53388113346852,"sku":"1671061","price":5.25,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_1a4be7a0-7b3d-4b1b-af58-d6be393493f2.jpg?v=1777211010","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/12-20553-mercury-mercruiser-washer-genuine-quicksilver-oem-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}