3" Red Polyurethane Boat Trailer Bow Stop Roller – 1/2" Shaft Bore, 3" Size
3" Red Polyurethane Boat Trailer Bow Stop Roller – 1/2" Shaft Bore, 3" Size is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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3" Red Polyurethane Boat Trailer Bow Stop Roller – 1/2" S...
3" Red Polyurethane Boat Trailer Bow Stop Roller – 1/2" Shaft Bore, 3" Size is backordered and will ship as soon as it is back in stock.
Product Details
This 3-inch red polyurethane boat trailer bow stop roller is designed for trailer winch posts and bow brackets that use a compatible 1/2-inch shaft or bolt. Its polyurethane roller surface supports the boat bow during loading and unloading while providing a durable replacement for a worn or damaged bow stop roller.
The roller is supplied as a single replacement component. The mounting shaft, washers, spacers, retaining hardware, and other installation hardware are not included unless separately stated by the seller.
- Bow stop roller for boat trailer winch posts and bow brackets.
- Nominal 3-inch roller size with a 1/2-inch shaft bore.
- Red polyurethane construction.
- Single roller supplied; mounting hardware is not included.
Reference Numbers
The following references appeared in the original product information. They are provided for comparison only; confirm the dimensions, bore, mounting arrangement, and roller profile before ordering.
| Brand or Source | Reference |
|---|---|
| JLM Marine | BR76RD17 |
| Stoltz | RP-443 |
| GHmarine | 3-inch Bow Stop Roller |
Applications
Use this roller on a boat trailer only when the existing mounting arrangement matches the roller's dimensions and bore. Measure the original roller, bracket width, shaft diameter, and available clearance before ordering.
| Use Case | Application | Fitment Requirements |
|---|---|---|
| Boat Trailer | Bow stop roller | Compatible winch post or bow bracket with a 1/2-inch shaft or bolt |
| Boat Trailer | Bow support during loading | Confirm roller diameter, width, bore, and bracket clearance |
Technical Specs
- Product Type
- Boat trailer bow stop roller
- Quantity
- 1 roller
- Material
- Polyurethane
- Color
- Red
- Nominal Roller Size
- 3 inches
- Approximate Dimensions
- 3 inches diameter × approximately 3 inches wide
- Shaft Bore
- 1/2 inch (12.7 mm)
- Installation
- Mounts on a compatible trailer winch post or bow bracket
What's in the Box
- 1 × Red polyurethane bow stop roller
Not included: mounting shaft or bolt, washers, spacers, cotter pins, pal nuts, and other retaining hardware.
Installation Notes
- Place the trailer on a level surface and secure the boat or remove it from the trailer.
- Measure the existing roller and mounting hardware before disassembly. Confirm the replacement's approximately 3-inch size and 1/2-inch bore are suitable.
- Remove the retaining hardware from the existing shaft and keep any reusable spacers or washers in their original positions.
- Inspect and clean the shaft. Replace corroded or damaged mounting hardware before installation.
- Slide the new roller onto the compatible shaft and reinstall the required spacers and washers.
- Secure the roller with suitable retaining hardware. Do not operate the trailer with a loose or unsecured roller.
- Check that the roller turns freely, is aligned with the boat bow, and does not contact the trailer frame or other components.
Troubleshooting & FAQ
How do I know if this roller will fit my trailer?
Measure the existing roller's diameter and width, the shaft or bolt diameter, the bracket clearance, and the roller profile. This replacement is intended for a nominal 3-inch bow stop roller using a compatible 1/2-inch shaft or bolt. Dimensions must be confirmed for your specific trailer.
Does the product include the shaft or mounting hardware?
No. This listing is for one bow stop roller. The shaft or bolt, washers, spacers, cotter pins, pal nuts, and other securing hardware are not included.
What is polyurethane used for?
Polyurethane provides a resilient roller surface for supporting the boat bow during trailer loading and unloading. Inspect the roller regularly for cuts, cracks, chunking, excessive wear, or deformation.
Can this roller be used as a keel roller?
This product is identified as a bow stop roller. Do not use it as a keel roller unless the trailer manufacturer or a qualified installer confirms that its dimensions, profile, load path, and mounting arrangement are suitable for that application.
When should I replace the roller?
Replace it when it develops deep grooves, cracks, missing material, deformation, excessive play, or no longer turns freely. A damaged or incorrectly aligned roller can affect boat loading and may damage the hull.
Is this an OEM component?
This listing is for a replacement boat trailer bow stop roller. No specific OEM manufacturer or verified OEM interchange number is established. Confirm dimensions and mounting compatibility rather than relying only on a brand or part-number comparison.
Safety & Important Information
- Verify the roller dimensions, shaft bore, bracket clearance, and mounting arrangement before ordering.
- Do not rely on a reference number alone to establish fitment.
- Use suitable retaining hardware and check that the roller is securely installed before trailering.
- Professional installation is recommended when the trailer, boat, or mounting hardware is damaged or heavily corroded.
About Sea Sierra
- Marine Replacement Parts — Practical replacement components for boat trailers and related marine applications.
- Fitment-Focused Selection — Confirm dimensions and mounting requirements before installation.
- Support When Needed — Contact support with your trailer measurements and photos if you need help comparing the replacement roller with your existing part.
Payment & Security
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