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Description
7" X 4" Boat Trailer Roller Assembly with 1/2 Inch Shaft Bow Stop7" X 4" Boat Trailer Roller Assembly with 1 2 Inch Shaft Bow Stop This universal bow roller assembly is designed for boat trailers equipped with a 1 2 inch mounting shaft. The tough polyurethane construction provides durable, non marking support for your boat's bow area, preventing scratches and scuffs during loading, trailering, and storage. It serves as a direct replacement for GlckMarine 7" X 4", MARKGOO 7" X 4", and JFATXTT 4" bow rollers,
7" X 4" Boat Trailer Roller Assembly with 1/2 Inch Shaft Bow Stop
This universal bow roller assembly is designed for boat trailers equipped with a 1/2-inch mounting shaft. The tough polyurethane construction provides durable, non-marking support for your boat's bow area, preventing scratches and scuffs during loading, trailering, and storage.
It serves as a direct replacement for GlückMarine 7" X 4", MARKGOO 7" X 4", and JFATXTT 4" bow rollers, offering a reliable fit and function for multiple trailer brands.
- Installation Method: Simple bolt-on process using a 1/2" shaft.
- Material: Made from high-quality, non-marking polyurethane (PU).
- Included Components: Comes as a complete roller assembly.
Compatible Trailer Models
Confirm your trailer model/year in the table below.
| Brand | Application | Notes |
|---|---|---|
| Multiple Brands | Boat trailers with 1/2 inch mounting shafts | Provides resilient support for 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/Light Blue) |
| 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) |
| Fitting Type | Bow Stop |
| Thread Size | 1/2 inch |
| Other Technical Attributes | Non-marking surface prevents boat hull damage |
Package Contents
- 1 x Boat Trailer Roller Assembly (7" X 4") with 1/2 Inch Shaft
Installation Guide
- Prepare the Trailer: Ensure the trailer is on a level surface and the boat is securely supported off the bow stop.
- Remove Old Roller: Loosen and remove the nuts and bolts securing the old bow roller shaft. Slide the shaft out and remove the old roller assembly.
- Position New Roller: Align the new 7" x 4" roller assembly with the mounting brackets on the trailer's bow stop post.
- Install Shaft: Slide the 1/2 inch shaft through the brackets and the center of the new roller.
- Secure Hardware: Fasten the washers and nuts onto both ends of the shaft. Tighten securely to ensure the roller is held firmly in place but can still turn freely.
- Final Check: Adjust the bow stop height as needed for your boat's hull and confirm all hardware is tight before loading your boat.
Troubleshooting & FAQ
Q: How do I confirm this roller fits my trailer?
A: This is a universal roller designed for boat trailers with a 1/2 inch mounting shaft. Measure your existing shaft or bracket to ensure compatibility. This assembly replaces 7" x 4" rollers from brands like GlückMarine, MARKGOO, and JFATXTT.
Q: What is the benefit of a polyurethane roller versus a rubber one?
A: Polyurethane (PU) rollers are known for being non-marking, which means they will not leave black scuffs or scratches on your boat's hull. They are also highly durable and resistant to UV degradation and saltwater.
Q: How can I tell if my current bow roller needs replacing?
A: Inspect your roller for signs of cracking, splitting, flat spots, or excessive wear. A worn-out roller will not spin freely and can make loading difficult or even damage your boat's hull.
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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy