Boat Trailer Roller Assembly – Fits Boat Trailers with 1/2 Inch Shaft (Replaces GlückMarine/SLSRPMT)

Boat Trailer Roller Assembly – Fits Boat Trailers with 1/2 Inch Shaft (Replaces GlückMarine/SLSRPMT)

This bow stop roller assembly is designed to protect and guide boats during trailer loading and unloading operations. It is compatible with boat trailers that utilize a 1/2 inch shaft mounting bracket.

This part is a direct replacement for the following models: GlückMarine 5" X 3" & 7" X 4" Bow Stop, SLSRPMT 3" Bow Roller, COLOFULWAY 3" Bow Roller, and Wonwopn 3" Bow Roller.

• Available in 5" x 3" and 7" x 4" sizes with V-Shape or W-Shape options.
• Made from durable Polyvinyl chloride (PVC) to prevent marring your boat's hull.
• Simple bolt-on design for straightforward installation.

Compatible Applications

This roller assembly is designed to fit boat trailers with 1/2 inch shaft mounting brackets. It works as a bow stop to protect and guide boats during trailer loading and unloading operations.

Technical Specifications

Package Contents

• 1 x Bow Roller (inner roller)
• 2 x End Bells/Caps
• 1 x Stainless Steel Bolt with Washers

Installation Guide

Follow these steps for a secure installation:

1. Safely secure your boat and trailer. Loosen and remove the bolt securing the old bow stop roller assembly.
2. Remove the old roller and end caps from the bracket.
3. Clean the bracket area to ensure a good fit for the new assembly.
4. Position the new inner roller between the bracket arms.
5. Place the end bells/caps on each side of the inner roller, aligning the holes.
6. Insert the new 1/2 inch stainless steel bolt through the bracket, end caps, and roller.
7. Attach the washers and nut, then tighten securely until the roller is snug but can still spin with resistance.

Troubleshooting & FAQ

How do I know if this roller assembly will fit my trailer?
This assembly fits boat trailers with a 1/2 inch shaft mounting bracket. Measure your existing bracket and bolt diameter to confirm. You should also select the correct size (e.g., 5" x 3" or 7" x 4") that matches your old roller.

What is the difference between the V-Shape and W-Shape rollers?
The shape helps guide your boat's keel. A V-Shape roller is a common, effective design for most hulls. A W-Shape roller provides a wider, more defined channel which can offer additional stability for certain hull designs during loading.

When should I replace my bow roller?
Inspect your roller regularly for signs of wear, such as deep grooves, cracks, or material degradation (becoming brittle or soft). You should also replace it if it is seized and no longer spins freely, as this can cause scuffing on your boat's hull.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.