Bow Stop Roller Assembly – Fits Boat Trailers (Replaces MARKGOO 7X4 INCH)
Bow Stop Roller Assembly – Fits Boat Trailers (Replaces MARKGOO 7X4 INCH) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
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Bow Stop Roller Assembly – Fits Boat Trailers (Replaces MARKGOO 7X4...
Bow Stop Roller Assembly – Fits Boat Trailers (Replaces MARKGOO 7X4 INCH) is backordered and will ship as soon as it is back in stock.
Product Details
This polyurethane Boat Trailer Roller Assembly with 1/2" Shaft Bow Stop 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.
It serves as a direct aftermarket replacement for MARKGOO part number 7X4 INCH.
- Mounts easily to your trailer’s winch post or winch stand.
- Durable, wear-resistant construction withstands freshwater and saltwater use.
- Includes one polyurethane bow stop roller assembly.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| MARKGOO | 7X4 INCH |
Engine & Model Compatibility
This 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.
Technical Specs
- Product Type
- Bow Stop Roller Assembly
- Installation
- Mounts to winch post or winch stand
- Housing Material
- Polyurethane
- Housing Color
- Blue
- Dimensions
- 7" overall length × 4" width (178 × 102 mm)
- Shaft Hole Diameter
- 1/2" (12.7 mm)
- Other Technical Attributes
- Will not mark boat, wear-resistant, water-resistant
What’s in the Box
- 1 × Boat Trailer Roller Assembly with 1/2" Shaft Bow Stop (Blue, 7" × 4")
Installation Notes
- Ensure the trailer is parked on a stable, level surface and the wheels are chocked.
- Loosen and remove the nuts and bolts securing the old or damaged bow stop roller from the winch stand.
- Slide the old roller off the mounting shaft. Clean the shaft and inspect it for any damage.
- Position the new roller assembly onto the shaft, ensuring it is centered on the winch post.
- Reinstall the mounting hardware and tighten securely, making sure the roller can spin freely but is not loose.
- Check the alignment with your boat’s bow to ensure it makes proper contact during loading.
Troubleshooting & FAQ
How do I know if this bow stop will fit my trailer?
This 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.
Will this roller mark my boat's hull?
No, 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.
How often should I inspect the bow roller?
It 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.
What are the signs of a worn-out bow roller?
Signs 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.
Can this roller be used in saltwater?
Yes, the polyurethane construction is highly resistant to both freshwater and saltwater environments, ensuring long-lasting durability.
Is any hardware included?
The 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.
OEM vs. Aftermarket?
This 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.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered 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 & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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