Attwood Marine Trailer Coupler Locking Pin, Fits 2 in and 3 in Couplers, Zinc-Plated Steel
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Overview
The Attwood Marine 11029-6 is a zinc-plated steel coupler locking pin for boat trailers with 2-inch and 3-inch couplers. It passes through the coupler release handle to help keep the coupler from opening by mistake while the trailer is hooked up. With a size of 2-1/4 in. wide and 1-5/8 in. long, it adds a simple retainer at the hitch point without taking up much space.
This is a straightforward replacement or spare for trailer owners who launch often, tow regularly, or keep their rig outside between trips. The quick connect, quick disconnect layout makes it easy to remove when unhitching and easy to put back in place before towing again.
Key features
- Fits 2-inch and 3-inch trailer couplers
- Passes through the coupler release handle to help prevent accidental disengagement
- Solid steel construction with zinc plating for better resistance in saltwater and freshwater trailer use
- Quick connect, quick disconnect design for faster hitching and unhitching
- Pin dimensions: 2-1/4 in. wide x 1-5/8 in. long
Compatibility and fit
This pin is meant for couplers in the stated 2-inch and 3-inch size range and is used as a retaining pin through the latch handle. For a clean fit, compare the opening in your coupler release handle with the overall size of the pin before ordering, especially if you are replacing older trailer hardware.
On a boat trailer, this part sits at a point that sees vibration, spray, road grime, and frequent handling at the ramp. Having the correct size matters because the pin needs to slide in easily but still stay secure while the trailer is under tow.
Materials and corrosion resistance
The steel body has a zinc-plated finish that helps it hold up better around freshwater and saltwater use than plain unfinished steel. That matters on trailers that get backed into the water, rinsed off, and then spend time on the highway between launches.
A quick freshwater rinse after saltwater use and a check for surface wear during normal trailer inspections will help keep the pin moving freely through the coupler handle.
Use on boat trailers
This is a good match for boat owners who want a simple mechanical retainer at the coupler and do not want to overcomplicate routine hitch checks. It suits everyday trailering for fishing boats, runabouts, skiffs, and other trailerable boats that use couplers in the stated size range.
Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.
Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.
Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.
Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.
Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.
Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.
To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.
We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.