Seachoice Coupler & Ball Mount Locks

Seachoice Trailer Hitch Coupler Locks: Purpose-Built Security for Boat Trailers

When you invest in a boat and trailer, protecting that investment doesn't stop at the water's edge. Seachoice — a brand built by and for boating, fishing, and watersports enthusiasts — brings that same hands-on expertise to trailer security with their Coupler & Ball Mount Locks. Designed specifically for the demands of marine trailering, Seachoice's trailer hitch coupler lock is a no-nonsense solution for keeping your trailer exactly where you left it.

What Sets Seachoice's Coupler Lock Apart

Seachoice's flagship offering in this category is their Trailer Hitch Lock (Part No. 50-37401), a compact but tough lock engineered around the realities of boat trailer ownership. Here's what defines it:

• Solid Brass Body Hasp: Brass construction resists corrosion in the wet, salt-laden environments that boat trailers routinely face — a critical advantage over cheaper steel alternatives that can rust and seize.
• Heat-Treated, Pick-Resistant Lock: The heat-treated lock cylinder is specifically designed to resist picking attempts, adding a meaningful layer of security against opportunistic thieves.
• Designed for the Coupler Padlock Hole: This lock is engineered to fit directly into the padlock hole of a standard trailer coupler, making installation straightforward and eliminating the need for adapters or extra hardware.
• Compact Dimensions: With a 1/4-inch pin diameter and a 1-5/8-inch closed position, it fits cleanly in tight coupler openings without interfering with nearby components.
• Two Matching Keys Included: The lock ships with two matching keys, so you always have a backup — a practical detail that matters when keys inevitably go missing at the launch ramp.
• Secures Attached or Unattached Trailers: Whether your trailer is hitched to a tow vehicle or sitting in a storage yard, this lock provides theft deterrence in both scenarios.

Seachoice's Commitment to Marine-Grade Quality

Seachoice is widely recognized in the marine accessories market for manufacturing products to rigorous standards that ensure proper function and first-rate appearance in demanding on-water conditions. Their approach to the Coupler & Ball Mount Locks category is no different — straightforward, durable, and purpose-matched to the needs of boaters who trailer frequently. For anyone who regularly launches at a public ramp or stores their trailer off-site, having a quality coupler lock isn't optional; it's a basic layer of protection that every trailer owner should have.

Whether you're trailering a bass boat to a weekend tournament or hauling a center console to a coastal launch, Seachoice's coupler lock delivers dependable security in a compact, corrosion-resistant package.