{"product_id":"1266921-mercury-mercruiser-washer-genuine-quicksilver-oem-part","title":"1266921 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 Upper Mount Bolt Washer - Part Number: 12-66921\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Quicksilver washer used as an upper mount bolt washer on Mercury and Mariner V6 swivel bracket and steering arm assemblies. This washer is used on many 135HP, 140HP, 150HP, 175HP, 200HP, 220HP, 225HP and Jet outboard mounting assemblies where the parts diagram specifies 12-66921.\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 12-66921\n\u003c\/p\u003e\n\u003cp\u003e\n • Used as an upper mount bolt washer\n\u003c\/p\u003e\n\u003cp\u003e\n • Commonly fitted in pairs on swivel bracket and steering arm assemblies\n\u003c\/p\u003e\n\u003cp\u003e\n • Used across Mercury \/ Mariner V6 2.0L and 2.5L mounting hardware applications\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 • 12-66921 current OEM service reference\n\u003c\/p\u003e\n\u003cp\u003e\n OEM \/ Related Numbers:\n\u003c\/p\u003e\n\u003cp\u003e\n • 12-66921\n\u003c\/p\u003e\n\u003cp\u003e\n • 66921\n\u003c\/p\u003e\n\u003cp\u003e\n • 1266921\n\u003c\/p\u003e\n\u003cp\u003e\n • 12-78688 related upper mount bolt washer\n\u003c\/p\u003e\n\u003cp\u003e\n • 10-8M0000491 related upper mount screw\n\u003c\/p\u003e\n\u003cp\u003e\n • 77326 related upper mount\n\u003c\/p\u003e\n\u003cp\u003e\n • 12-816432 related thrust washer\n\u003c\/p\u003e\n\u003cp\u003e\n • 12-814432 earlier related washer reference used in the same upper-mount area on some assemblies\n\u003c\/p\u003e\n\u003cp\u003e\n Aftermarket \/ Verified Equivalents:\n\u003c\/p\u003e\n\u003cp\u003e\n • No aftermarket equivalent\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 • Mercury \/ Mariner V6 swivel bracket and steering arm assemblies\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury \/ Mariner upper mount bolt hardware\n\u003c\/p\u003e\n\u003cp\u003e\n • Performance and high-output Mercury outboard mounting assemblies where 12-66921 is specified\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 • Engine models:\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-135 - serial 0C239553 to 0D081999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-135 - serial 0D082000 to 0G303045\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-135 DFI 2.5L - serial 1B417702 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-140 International - serial 0T178500 to 1B226999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 - serial 4868998 to 0A904645\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 - serial 5600162 to 0A904645\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 - serial 0A904646 to 0C100860\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 - serial 0C100861 to 0C239552\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 - serial 0C239553 to 0D081999\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 - serial 0G303046 to 0G760299\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 EFI - serial 0G760300 to 0G960499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 EFI - serial 0G960500 to 0T408999\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 Magnum - serial 5600162 to 0A904645\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 Marathon - serial 5600162 to 0A904645\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 Work - serial 4868998 to 0A904645\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150 XR-2 - serial 4868998 to 0A904645\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-150XRI EFI - serial 0D082000 to 0G303045\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 Australia\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 - serial 0C100861 to 0C239552\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-175 - serial 0C239553 to 0D081999\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 EFI 2.5L - serial 0T409000 to 0T800999\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-175 DFI 2.5L - serial 1B417702 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 - serial 5624878 to 0C100860\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 - serial 0C100861 to 0C291519\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 - serial 0C291520 to 0D081999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 - serial 0D082000 to 0G303045\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 - serial 0G303046 to 0G760299\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 - serial 0G760300 to 0G960499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 - serial 0G960500 to 1B226999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 EFI - serial 0C100861 to 0C999999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 EFI - serial 0G303046 to 0G760299\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 EFI - serial 0G760300 to 0G960499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 EFI - serial 0G960500 to 0T408999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 EFI 2.5L - serial 0T409000 to 0T800999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 EFI 2.5L - serial 0T801000 to 1B226999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-200 EFI 2.5L - serial 1B227000 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-220 - serial 0B117316 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury V-225 - serial 5628028 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury XR-4 - serial 0B242885 to 0C100860\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury XR-4 - serial 0C100861 to 0C239552\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury XR-4 - serial 0C239553 to 0D081999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury XR-6 - serial 0D082000 to 0G303045\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury XR-6 - serial 0G303046 to 0G760299\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury XR-6 - serial 0G760300 to 0G960499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury XR-6 - serial 0G960500 to 1B226999\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 150 EFI Pro Max \/ Super Mag - serial 0D935000 to 0G610049\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 200 EFI Pro Max \/ Super Mag - serial 0D935000 to 0G610079\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 225 EFI Pro Max \/ Super Mag - serial 0D935638 to 0G610103\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 105 Jet - serial 0D082000 to 0G303045\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 105 Jet - serial 0G303046 to 0G760299\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 110 Jet 2.5L - serial 1B690542 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 140 Jet - serial 0D082000 to 0G303045\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 140 Jet - serial 0G303046 to 0G760299\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 140 Jet - serial 0G760300 to 0G960499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 140 Jet - serial 0G960500 to 0T178499\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 150 Pro XS 2.5L - serial 1B690542 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 175 Pro XS 2.5L - serial 1B516339 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 250 \/ 275 - serial 0C101891 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300 3.4L - serial 5611648 and up\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • HP Range: commonly 105 Jet - 300HP outboard mounting assemblies where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: Mercury \/ Mariner V6 and high-performance outboard mounting hardware\n\u003c\/p\u003e\n\u003cp\u003e\n • System Type: Swivel bracket \/ steering arm upper mount bolt washer\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 This washer sits under the upper mount bolt to spread clamping load across the mounting assembly and maintain correct hardware spacing at the swivel bracket \/ steering arm connection.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Common signs of failure:\n\u003c\/p\u003e\n\u003cp\u003e\n • Washer missing during upper mount service\n\u003c\/p\u003e\n\u003cp\u003e\n • Upper mount hardware loose or incorrectly spaced\n\u003c\/p\u003e\n\u003cp\u003e\n • Washer corroded, distorted or worn\n\u003c\/p\u003e\n\u003cp\u003e\n • Steering bracket movement after mount service\n\u003c\/p\u003e\n\u003cp\u003e\n • Replacement required during swivel bracket or mount bolt repairs\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":53388111741220,"sku":"3742856","price":15.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_bd6fd094-a931-44ff-bc3a-3a0915598b2c.jpg?v=1777210944","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/1266921-mercury-mercruiser-washer-genuine-quicksilver-oem-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}