{"product_id":"bow-stop-roller-assembly-fits-boat-trailers-replaces-markgoo-7x4-inch","title":"Bow Stop Roller Assembly – Fits Boat Trailers (Replaces MARKGOO 7X4 INCH)","description":"\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\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis polyurethane \u003cstrong\u003eBoat Trailer Roller Assembly with 1\/2\" Shaft Bow Stop\u003c\/strong\u003e provides smooth, reliable support for your boat during loading and launching. Designed to fit most boat trailers with a 1\/2\" mounting shaft, it attaches to the winch post to guide the bow securely.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct aftermarket replacement for MARKGOO part number 7X4 INCH.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMounts easily to your trailer’s winch post or winch stand.\u003c\/li\u003e\n\u003cli\u003eDurable, wear-resistant construction withstands freshwater and saltwater use.\u003c\/li\u003e\n\u003cli\u003eIncludes one polyurethane bow stop roller assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\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      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMARKGOO\u003c\/td\u003e\n        \u003ctd\u003e7X4 INCH\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis bow stop roller assembly is designed for universal application on most boat trailers equipped with 1\/2\" mounting shafts. It mounts to the winch post or stand at the front of the trailer, serving as the primary contact point for the boat's bow during loading and recovery.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eBow Stop Roller Assembly\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eMounts to winch post or winch stand\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003ePolyurethane\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlue\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e7\" overall length × 4\" width (178 × 102 mm)\u003c\/dd\u003e\n  \u003cdt\u003eShaft Hole Diameter\u003c\/dt\u003e\n\u003cdd\u003e1\/2\" (12.7 mm)\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eWill not mark boat, wear-resistant, water-resistant\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Boat Trailer Roller Assembly with 1\/2\" Shaft Bow Stop (Blue, 7\" × 4\")\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eEnsure the trailer is parked on a stable, level surface and the wheels are chocked.\u003c\/li\u003e\n  \u003cli\u003eLoosen and remove the nuts and bolts securing the old or damaged bow stop roller from the winch stand.\u003c\/li\u003e\n  \u003cli\u003eSlide the old roller off the mounting shaft. Clean the shaft and inspect it for any damage.\u003c\/li\u003e\n  \u003cli\u003ePosition the new roller assembly onto the shaft, ensuring it is centered on the winch post.\u003c\/li\u003e\n  \u003cli\u003eReinstall the mounting hardware and tighten securely, making sure the roller can spin freely but is not loose.\u003c\/li\u003e\n  \u003cli\u003eCheck the alignment with your boat’s bow to ensure it makes proper contact during loading.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this bow stop will fit my trailer?\u003c\/summary\u003e\u003cp\u003eThis roller is designed to fit trailers with a 1\/2\" diameter mounting shaft on the winch stand. Measure your trailer's existing shaft diameter to confirm compatibility. The roller's dimensions are 7\" in overall length by 4\" in width.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this roller mark my boat's hull?\u003c\/summary\u003e\u003cp\u003eNo, the polyurethane material is specifically designed to be non-marking, preventing scuffs and scratches on your boat's gelcoat or paint during loading and transport.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I inspect the bow roller?\u003c\/summary\u003e\u003cp\u003eIt is good practice to inspect your bow roller at the beginning of each boating season and periodically throughout the year. Check for cracks, deep grooves, or excessive wear that could compromise its function.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a worn-out bow roller?\u003c\/summary\u003e\u003cp\u003eSigns of failure include visible cracks, deformation, or if the roller no longer spins freely. A worn roller can make launching and retrieving your boat more difficult and may damage the hull.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan this roller be used in saltwater?\u003c\/summary\u003e\u003cp\u003eYes, the polyurethane construction is highly resistant to both freshwater and saltwater environments, ensuring long-lasting durability.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs any hardware included?\u003c\/summary\u003e\u003cp\u003eThe package contains the roller assembly itself. Mounting hardware such as the shaft, bolts, and nuts are typically part of the trailer's winch stand and are not included.\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\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\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — 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":50717902668091,"sku":"3Inch-DarkBlue-V","price":23.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/3Inch-DarkBlue-V.png?v=1762937928","url":"https:\/\/seasierra.com\/products\/bow-stop-roller-assembly-fits-boat-trailers-replaces-markgoo-7x4-inch","provider":"SeaSierra","version":"1.0","type":"link"}