{"product_id":"transom-clamp-assembly-fits-yamaha-40hp-48hp-55hp-60hp-replaces-663-43118-01-6f5-43116-00","title":"Transom Clamp Assembly – Fits Yamaha 40HP 48HP 55HP 60HP (Replaces 663-43118-01, 6F5-43116-00)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eTransom Clamp Assembly\u003c\/strong\u003e is designed to fit Yamaha outboard motors rated 40HP, 48HP, 55HP, and 60HP 2-stroke engines. It provides secure mounting and engine retention to the boat transom, ensuring stable operation under marine conditions.\u003c\/p\u003e\n\u003cp\u003eThis assembly directly replaces OEM part numbers 663-43118-01 and 6F5-43116-00, offering reliable interchange compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete assembly includes handle, screw, pad, pin, and bolt\u003c\/li\u003e\n  \u003cli\u003eSuitable for both freshwater and saltwater environments\u003c\/li\u003e\n  \u003cli\u003eBolt-on installation to transom bracket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e663-43118-01\u003c\/td\u003e\n        \u003ctd\u003ePrimary OEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6F5-43116-00\u003c\/td\u003e\n        \u003ctd\u003eScrew, Transom Clamp\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e663-43118-01-8D\u003c\/td\u003e\n        \u003ctd\u003eAlternate OEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6F5-43114\u003c\/td\u003e\n        \u003ctd\u003ePad component\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e90243-04007\u003c\/td\u003e\n        \u003ctd\u003ePin component\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e90109-06M12\u003c\/td\u003e\n        \u003ctd\u003eBolt component\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eHP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e40\u003c\/td\u003e\n        \u003ctd\u003e2-stroke\u003c\/td\u003e\n        \u003ctd\u003eE40G series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e48\u003c\/td\u003e\n        \u003ctd\u003e2-stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e55\u003c\/td\u003e\n        \u003ctd\u003e2-stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e2-stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eTransom Clamp Assembly\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eOutboard motor transom mounting\u003c\/dd\u003e\n  \u003cdt\u003eCondition\u003c\/dt\u003e\n  \u003cdd\u003eBrand new aftermarket\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n  \u003cdd\u003eMarine-grade metal and composite\u003c\/dd\u003e\n  \u003cdt\u003eComponents Included\u003c\/dt\u003e\n  \u003cdd\u003eHandle, screw, pad, pin, bolt\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003e6F5-43114 Pad × 1\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e6F5-43116 Screw, Transom Clamp × 1\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e663-43118-00 Handle, Transom Clamp × 1\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e90243-04007 Pin × 1\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e90109-06M12 Bolt × 1\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect battery and remove engine cover before beginning work.\u003c\/li\u003e\n  \u003cli\u003eRemove old transom clamp assembly by loosening the existing bolt and pin.\u003c\/li\u003e\n  \u003cli\u003eClean the transom bracket mounting surface and inspect for wear or damage.\u003c\/li\u003e\n  \u003cli\u003ePosition the new pad (6F5-43114) onto the transom bracket.\u003c\/li\u003e\n  \u003cli\u003eInsert the handle (663-43118-00) into the transom clamp slot.\u003c\/li\u003e\n  \u003cli\u003eAlign the screw (6F5-43116) through the handle and bracket.\u003c\/li\u003e\n  \u003cli\u003eInsert the pin (90243-04007) to secure the handle pivot point.\u003c\/li\u003e\n  \u003cli\u003eInstall the bolt (90109-06M12) and tighten to manufacturer's torque specification.\u003c\/li\u003e\n  \u003cli\u003eTest clamp operation by opening and closing the handle several times to verify smooth movement.\u003c\/li\u003e\n  \u003cli\u003eEnsure the engine is securely mounted to the transom before operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if this clamp assembly fits my Yamaha outboard?\u003c\/summary\u003e\n  \u003cp\u003eVerify your engine's horsepower rating (40, 48, 55, or 60HP 2-stroke) and confirm the original part number matches 663-43118-01 or 6F5-43116-00. Check your engine model plate or service manual for compatibility.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I use this on a 4-stroke Yamaha engine?\u003c\/summary\u003e\n  \u003cp\u003eThis assembly is specifically designed for 2-stroke Yamaha engines rated 40–60HP. For 4-stroke applications, consult your parts diagram to confirm the correct transom clamp specification.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat should I do if the clamp handle feels loose after installation?\u003c\/summary\u003e\n  \u003cp\u003eCheck that the pin (90243-04007) is fully seated and the bolt (90109-06M12) is torqued to specification. Inspect the pad for proper alignment and verify all components are assembled in the correct order.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should the transom clamp assembly be replaced?\u003c\/summary\u003e\n  \u003cp\u003eReplace when you notice difficulty opening or closing the clamp, visible cracks or corrosion, or if the engine does not stay securely locked to the transom. Annual inspections are recommended for saltwater use.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs thread locker required on the bolt?\u003c\/summary\u003e\n  \u003cp\u003eYes, apply marine-grade thread locker to the bolt threads to prevent loosening from vibration. Follow the manufacturer's recommended torque values during installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWill this clamp work with tilt\/trim systems?\u003c\/summary\u003e\n  \u003cp\u003eThis assembly is compatible with engines that include tilt\/trim mechanisms, provided your model originally used part numbers 663-43118-01 or 6F5-43116-00. Verify against your engine's parts diagram.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":51025817043259,"sku":"24TC429","price":23.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/12_60457366-4b56-41c9-90bc-5c650548b49a.jpg?v=1772959712","url":"https:\/\/seasierra.com\/products\/transom-clamp-assembly-fits-yamaha-40hp-48hp-55hp-60hp-replaces-663-43118-01-6f5-43116-00","provider":"SeaSierra","version":"1.0","type":"link"}