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7" X 4" Boat Trailer Roller Assembly with 1/2 Inch Shaft Bow Stop
- $38.99
$46.00- $38.99
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7" X 4" Boat Trailer Roller Assembly with 1/2 Inch Shaft Bow Stop
This versatile bow roller assembly is designed for boat trailers equipped with a 1/2-inch mounting shaft. Made from durable, non-marking polyurethane material, it provides gentle yet firm support for your boat's bow during loading and trailering. The rugged construction ensures long-term resistance to damage from sunlight, chemicals, and water.
This assembly serves as a direct replacement for the following models: GluckMarine 7" X 4", MARKGOO 7" X 4" Boat Trailer Roller, and JFATXTT 4" Bow Roller.
- Installation Type: Bolt-on for 1/2" shafts.
- Material: High-strength, non-marking polyurethane (PU).
- Included Components: Comes with roller, end bells, and mounting bolt with washer.
Compatible Applications
Confirm your trailer specifications in the table below.
| Brand | Application | Notes |
|---|---|---|
| Multiple Brands | Boat trailers with 1/2 inch mounting shafts | Provides resilient support for the boat's keel |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Bow Roller Assembly |
| Installation | Bolt-on (1/2 inch shaft) |
| Material | Polyurethane (PU) |
| Color | Blue (also available in Black) |
| Dimensions | 7" L x 4" W (177.8 mm x 101.6 mm) |
| Center Hole Diameter | 17 mm (0.67 in) |
| Shaft Size | 1/2 inch (12.7 mm) |
| Weight | 0.94 kg (2.07 lb) |
| Other Technical Attributes | Non-marking surface prevents boat hull damage |
Package Contents
- 1 x Bow Roller (7" x 4")
- 2 x End Bells
- 1 x Bolt with Washer
- Note: Package includes all components listed, matching the GluckMarine assembly.
Installation Guide
- Ensure the boat is off the trailer and the trailer is parked on a level surface with wheels chocked for safety.
- Locate the existing bow roller assembly and use appropriate tools to remove the nut and bolt from the mounting shaft.
- Slide the old shaft and roller out of the bracket, taking note of the order of any washers or end caps.
- Clean the mounting bracket area to remove any dirt or corrosion.
- Slide the new bolt through the bracket and one end bell, then place the new bow roller onto the bolt.
- Position the second end bell on the other side of the roller and slide the bolt completely through.
- Secure the assembly by tightening the washer and nut. Do not overtighten; the roller should spin freely with minimal side-to-side movement.
Troubleshooting & FAQ
Q: How do I confirm this roller fits my trailer?
A: This assembly is designed for trailer brackets that use a 1/2-inch diameter mounting shaft. Measure your trailer's existing hardware and bracket width to ensure it matches the product dimensions (7" L x 4" W).
Q: What are the benefits of the polyurethane material?
A: Polyurethane is a durable, non-marking material that won't leave scuffs or scratches on your boat's hull. It is also highly resistant to UV degradation, chemicals, and water, ensuring a longer service life compared to traditional rubber rollers.
Q: When should I replace my bow roller?
A: Inspect your bow roller regularly for signs of wear, such as deep cracks, flat spots, or deformation. Replace it if it no longer spins freely or fails to provide adequate support, as a worn roller can damage your boat's bow during loading and transport.
Q: OEM vs. Aftermarket?
A: 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 ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: 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.
Q: What is your warranty and return policy?
A: 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.
We can ship to virtually any address in the world with free shipping available for most regions.
For our typical US and Canadian customers , our shipping timeframes are as follows:
- Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
- US warehouse shipment: orders will be delivered within 5 days after placing the order.
- China warehouse shipment: orders will be delivered about 12 days after placing the order.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.
As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.
We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.
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