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Description
Boat Trailer Roller Assembly with 1/2" Shaft Bow Stop – Fits 7" x 4" Trailers (Replaces MARKGOO 7X4 INCH)Boat Trailer Roller Assembly with 1 2" Shaft Bow Stop Fits 7" x 4" Trailers This polyurethane bow stop roller provides smooth support for your boat during loading and launching operations on most trailers with a 1 2" mounting shaft. It mounts easily to the winch post or winch stand at the front of the trailer. Direct replacement for MARKGOO 7X4 INCH trailers and similar models requiring a 7" length and 4" width bow stop roller assembly. Includes 1
Boat Trailer Roller Assembly with 1/2" Shaft Bow Stop – Fits 7" x 4" Trailers
This polyurethane bow stop roller provides smooth support for your boat during loading and launching operations on most trailers with a 1/2" mounting shaft. It mounts easily to the winch post or winch stand at the front of the trailer.
Direct replacement for MARKGOO 7X4 INCH trailers and similar models requiring a 7" length and 4" width bow stop roller assembly.
- Includes 1 × Boat Trailer Roller Assembly with 1/2" Shaft Bow Stop
- Blue polyurethane housing offers wear and water resistance
- Mounts to winch post or winch stand on the trailer
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| MARKGOO | 7X4 INCH |
Compatible Engine Models
Confirm your engine model/year in the table below.
Technical Specifications
| Specification | Value |
|---|---|
| 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 |
Package Contents
- 1 × Boat Trailer Roller Assembly with 1/2" Shaft Bow Stop (Blue, 7" × 4")
Installation Guide
- Locate the winch post or winch stand on the front of your trailer.
- Remove the existing bow stop roller assembly if applicable.
- Align the 1/2" shaft hole of the new roller assembly with the mounting shaft on the trailer.
- Slide the roller assembly onto the shaft fully.
- Secure the assembly with appropriate fasteners and ensure it spins freely.
- Check alignment so the bow of the boat contacts the roller smoothly during loading.
- Test the installation by manually rolling the boat onto the trailer.
- Make any necessary adjustments for proper fit and function.
- Tighten all hardware firmly before regular use.
Troubleshooting & FAQ
- How do I confirm this fits my trailer? Check that your trailer has a 1/2" mounting shaft on the winch post or stand and that dimensions close to 7" x 4" are appropriate.
- How often should I replace the bow stop roller? Replace if you notice wear that reduces smooth rolling, cracking, or damage that may mark your boat.
- What makes this different from OEM parts? 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.
- 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.
- How do I maintain this roller assembly? Rinse with fresh water after exposure to saltwater and inspect periodically for wear or damage.
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
4.4 ★★★★★
Based on 988 reviews
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Product Reviews
★★★★★ 5
Can become brittle with sharp edges with use.
Color: Blue T-Bone, Size: 1 Count
Our little dog loved chewing this, however after chewing the toy became jagged and brittle with sharp edges that cut into her upper lip which took about 2 weeks to heal. Unfortunately the return window had closed.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Busy bone
Color: Blue T-Bone, Size: 1 Count, Color: Blue T-Bone, Size: 1 Count
My dog loves these!! Great busy bone! And they can hold it with her paws really well. It does kill your foot if you step on it barefoot in the middle of the night. This is a picture of the bone after 7months.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
My Dog Loves this!
Color: Blue T-Bone, Size: 1 Count, Color: Blue T-Bone, Size: 1 Count
My dog loves her Nubbies! My Dog chews her Nubbie every morning after she has her breakfast. She sometimes wants my husband or I to hold it for her while she chews on it. I think it is really good for her teeth and gums. These last a few months for our dog who chews it every morning. After a few months the edges get a little rough from all the chewing so I throw it out and replace with a new one. These are very reasonably priced, so I always have a fresh one ready to go. She gets very excited when we get a new one out of the package..
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Reviewed in the United States on September 5, 2025
★★★★★ 3
Teething Puppy Destroyed Goose
Color: Blue goose - pineapple plush
Product appearance attractive and looks like fun, however, simply did NOT withstand an aggressive chewer like my 10 week old puppy - did not last more than three days and needed to be thrown out for safety reasons. ☹️
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Reviewed in the United States on June 8, 2026
★★★★★ 2
Not indestructible but she had fun tearing it apart.
Color: Blue goose - pineapple plush
Hardly indestructible as the description claimed. She enjoyed it, while it lasted, for 15 minutes. I wish I could figure out how to show the photo of her after she tore it up. But I can’t. Sadly.
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Reviewed in the United States on May 31, 2026