{"product_id":"bow-roller-assembly-fits-boat-trailers-1-2-shaft-replaces-jfatxtt-markgoo-gl-ckmarine","title":"Bow Roller Assembly – Fits Boat Trailers 1\/2\" Shaft (Replaces JFATXTT, MARKGOO, GlückMarine)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\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\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\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 is a durable \u003cstrong\u003ePolyurethane Boat Trailer Bow Roller Assembly\u003c\/strong\u003e designed to fit various boat trailers. The non-marking polyurethane construction protects your boat's hull from scuffs and scratches while providing smooth, reliable support during loading and trailering. It mounts on standard winch posts that accommodate a 1\/2\" diameter shaft.\u003c\/p\u003e\n\u003cp\u003eThis assembly is a direct interchange for several models, including the JFATXTT 3\" and 4\" Bow Rollers, MARKGOO 7x4 INCH Bow Stop, and GlückMarine 5\"x3\" Bow Roller Assembly.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMounts directly on your trailer’s winch post using a 1\/2\" shaft\/bolt.\u003c\/li\u003e\n\u003cli\u003eMade from non-marking polyurethane that will not rust or develop flat spots.\u003c\/li\u003e\n\u003cli\u003eIncludes the roller, two end bells, and all necessary mounting hardware.\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\u003eJFATXTT\u003c\/td\u003e\n        \u003ctd\u003e3\" Bow Roller\u003c\/td\u003e\n        \u003ctd\u003eDirect replacement\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJFATXTT\u003c\/td\u003e\n        \u003ctd\u003e4\" Bow Roller\u003c\/td\u003e\n        \u003ctd\u003eDirect replacement\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMARKGOO\u003c\/td\u003e\n        \u003ctd\u003e7x4 INCH Bow Stop\u003c\/td\u003e\n        \u003ctd\u003eEquivalent assembly\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGlückMarine\u003c\/td\u003e\n        \u003ctd\u003e5\"x3\" Bow Roller Assembly\u003c\/td\u003e\n        \u003ctd\u003eEquivalent assembly\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 trailer's winch post dimensions in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eType\u003c\/th\u003e\n        \u003cth\u003eSpecifications\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\u003eGeneral\u003c\/td\u003e\n        \u003ctd\u003eBoat Trailers\u003c\/td\u003e\n        \u003ctd\u003eWinch posts\u003c\/td\u003e\n        \u003ctd\u003e1\/2\" shaft diameter\u003c\/td\u003e\n        \u003ctd\u003eFor standard bow mounts\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGeneral\u003c\/td\u003e\n        \u003ctd\u003eSki Boats\u003c\/td\u003e\n        \u003ctd\u003eTrailers\u003c\/td\u003e\n        \u003ctd\u003e1\/2\" shaft diameter\u003c\/td\u003e\n        \u003ctd\u003eFits standard bow mounts\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGeneral\u003c\/td\u003e\n        \u003ctd\u003eFishing Boats\u003c\/td\u003e\n        \u003ctd\u003eTrailers\u003c\/td\u003e\n        \u003ctd\u003e1\/2\" shaft diameter\u003c\/td\u003e\n        \u003ctd\u003eFits standard bow mounts\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGeneral\u003c\/td\u003e\n        \u003ctd\u003eSailboat Trailers\u003c\/td\u003e\n        \u003ctd\u003eTrailers\u003c\/td\u003e\n        \u003ctd\u003e1\/2\" shaft diameter\u003c\/td\u003e\n        \u003ctd\u003eFits standard bow mounts\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\u003eBoat Trailer Bow Roller Assembly\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eMounts on boat trailer winch post\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003e1\/2\" diameter shaft\/bolt\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003ePolyurethane\/Polyvinyl\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlue\/Red (varies by selection)\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eInner length: 3\" (76.2 mm), Outer length: 5\" (127 mm)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003eApprox. 0.58 kg (1.28 lbs)\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eMounts in winch posts with included hardware\u003c\/dd\u003e\n  \u003cdt\u003eThread Size\u003c\/dt\u003e\n\u003cdd\u003e1\/2\" shaft\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eNon-marking, won't rust or flat spot\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Polyurethane Bow Roller (3\" inner length, 5\" outer length)\u003c\/li\u003e\n  \u003cli\u003e2 x End Bells\/Caps\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x 1\/2\" Diameter Mounting Bolt with Hardware\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eEnsure the boat is securely positioned off the trailer's bow stop to relieve pressure.\u003c\/li\u003e\n  \u003cli\u003eUse a wrench to loosen and remove the nut from the existing bow roller bolt.\u003c\/li\u003e\n  \u003cli\u003eSlide the old bolt out of the winch post bracket to release the old roller. Note the order of hardware.\u003c\/li\u003e\n  \u003cli\u003eClean the bracket area of any dirt or debris before installation.\u003c\/li\u003e\n  \u003cli\u003ePosition the new roller between the winch post brackets.\u003c\/li\u003e\n  \u003cli\u003eSlide the new 1\/2\" mounting bolt through the bracket, one end bell, the roller, the second end bell, and the other side of the bracket.\u003c\/li\u003e\n  \u003cli\u003eSecurely fasten the nut onto the bolt.\u003c\/li\u003e\n  \u003cli\u003eDo not overtighten—the roller must spin freely with minimal resistance. Check for smooth rotation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this roller will fit my trailer?\u003c\/summary\u003e\u003cp\u003eThis roller fits winch post brackets designed for a 3-inch wide roller and uses a 1\/2-inch diameter shaft or bolt. The total assembly width with end caps is 5 inches. Measure your existing setup to confirm compatibility.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat's the difference between the 3\" and 5\" measurement?\u003c\/summary\u003e\u003cp\u003eThe 3-inch dimension refers to the inner length of the roller itself, which is the part that fits between the two winch post brackets. The 5-inch dimension is the total outer length, including the two end bells\/caps on each side.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this polyurethane roller mark my boat's hull?\u003c\/summary\u003e\u003cp\u003eNo. It is made from a non-marking polyurethane\/polyvinyl material specifically designed to protect your boat's finish from scuffs and marks during loading and transport.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow tight should I fasten the mounting bolt?\u003c\/summary\u003e\u003cp\u003eTighten the nut securely, but do not overtighten. The roller must be able to spin freely with minimal resistance. If it's too tight, it won't rotate as the boat moves, defeating its purpose.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs that my old bow roller needs replacement?\u003c\/summary\u003e\u003cp\u003eLook for signs of cracking, flat spots, excessive wear, or seizing (it doesn't spin freely). A worn-out roller can damage your boat's hull and make launching and retrieving more difficult.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs any other hardware required for installation?\u003c\/summary\u003e\u003cp\u003eNo. The package includes one polyurethane roller, two end bells, and a 1\/2\" diameter mounting bolt with its corresponding nut and washers, providing everything needed for a standard installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\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\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\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\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs 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\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717900243259,"sku":"19BT010B","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/19BT010B.png?v=1762937850","url":"https:\/\/seasierra.com\/products\/bow-roller-assembly-fits-boat-trailers-1-2-shaft-replaces-jfatxtt-markgoo-gl-ckmarine","provider":"SeaSierra","version":"1.0","type":"link"}