{"product_id":"8m0121257-mercury-coil-1-4-genuine-used-part","title":"8M0121257 Mercury Coil 1\u00264 | Genuine Used 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 Mercury Ignition Coil - Part Number: 8M0121257\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Mercury ignition coil used on selected Yamaha-based Mercury \/ Mariner four-stroke outboards. This coil is commonly identified as the coil for cylinders 1 and 4 in compatible 115HP four-stroke ignition systems and is part of the 880892T \/ 8M0121257 supersession family.\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 Mercury ignition coil\n\u003c\/p\u003e\n\u003cp\u003e\n • Correct Mercury part number 8M0121257\n\u003c\/p\u003e\n\u003cp\u003e\n • Replaces earlier 880892T ignition coil reference\n\u003c\/p\u003e\n\u003cp\u003e\n • Commonly used for cylinder 1 and cylinder 4 positions\n\u003c\/p\u003e\n\u003cp\u003e\n • Cross-references with Yamaha 68V ignition coil family\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 • 8M0121257 → Supersedes 880892T\n\u003c\/p\u003e\n\u003cp\u003e\n • 880892T earlier Mercury ignition coil 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 • 8M0121257\n\u003c\/p\u003e\n\u003cp\u003e\n • 339-8M0121257\n\u003c\/p\u003e\n\u003cp\u003e\n • 880892T\n\u003c\/p\u003e\n\u003cp\u003e\n • 339-880892T\n\u003c\/p\u003e\n\u003cp\u003e\n • 888309 related coil reference\n\u003c\/p\u003e\n\u003cp\u003e\n • Yamaha: 68V-82310-00-00\n\u003c\/p\u003e\n\u003cp\u003e\n • Yamaha: 68V-82310-01-00\n\u003c\/p\u003e\n\u003cp\u003e\n • Yamaha: 69J-82310-00-00\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 • WSM: 380-5122\n\u003c\/p\u003e\n\u003cp\u003e\n • Aftermarket Mercury \/ Yamaha coil replacements for 339-880892T\n\u003c\/p\u003e\n\u003cp\u003e\n • Aftermarket Yamaha \/ Mercury F115 \/ F200 \/ F225 coil replacements\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 Yamaha-based four-stroke ignition systems\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 115 EFI FourStroke - 2001\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 115 EFI FourStroke - 2002\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 115 EFI FourStroke - 2003\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 115 EFI FourStroke - 2004\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 115 EFI FourStroke - 2005\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 115 EFI FourStroke - 2006\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 225HP 4-stroke EFI applications using shared Yamaha-based coil family\n\u003c\/p\u003e\n\u003cp\u003e\n • Yamaha F115 \/ LF115 ignition systems using 68V coil family\n\u003c\/p\u003e\n\u003cp\u003e\n • Yamaha F200 \/ F225 4-stroke ignition systems using related 68V \/ 69J coil family\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • HP Range: commonly 115HP - 225HP shared Mercury \/ Yamaha four-stroke coil family\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: Mercury \/ Yamaha-based EFI four-stroke outboard\n\u003c\/p\u003e\n\u003cp\u003e\n • Year Range: approximately 2001 - 2006 for core Mercury 115 EFI FourStroke applications, with broader Yamaha-family use through 2015 where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • Serial Note: Match by cylinder position, coil number, engine serial number and connector style.\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 ignition coil converts ECU-triggered low-voltage input into high-voltage spark output for the assigned cylinders.\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 \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Misfire on cylinder 1 or 4\n\u003c\/p\u003e\n\u003cp\u003e\n • Weak or no spark\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine runs rough under load\n\u003c\/p\u003e\n\u003cp\u003e\n • Coil fault follows when swapped between cylinders\n\u003c\/p\u003e\n\u003cp\u003e\n • Hard starting after plug replacement\n\u003c\/p\u003e\n\u003cp\u003e\n • ECU ignition fault code\n\u003c\/p\u003e\n\u003cp\u003e\n • Cracked, swollen or corroded coil body\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 used part\n\u003c\/p\u003e\n\u003cp\u003e\n • Removed from running engine where applicable\n\u003c\/p\u003e\n\u003cp\u003e\n • In good working condition unless otherwise stated\n\u003c\/p\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53389239288100,"sku":"9261053","price":112.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_52ff120f-3e84-46bf-b884-06283ae2622f.jpg?v=1777432806","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/8m0121257-mercury-coil-1-4-genuine-used-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}