Trailer Hitch Coupler Lock, Adjustable, Fits 1-7/8–2-5/16

Trailer hitch lock kit secures your coupler fast to reduce tow-away theft risk while your trailer is parked or in storage. Designed for 1-7/8 in, 2 in, and 2-5/16 in couplers, this adjustable trailer ball lock fits common RV, boat, and utility trailer setups. The aluminum alloy lock body pairs with a carbon steel lock beam for a tough, prying-resistant barrier, with a smooth key-operated lock for quick daily use.

Built for frequent towing and long periods of outdoor parking, this coupler lock combination set adds a visible deterrent and a solid mechanical barrier at the hitch point. Insert the lock into the coupler, set the height, and turn the key—no extra tools or complicated steps. Use it across RVs, boats, off-road trailers, and cargo haulers when you need consistent fit and reliable operation in sun, rain, or snow. Grab yours today and lock down your trailer before the next trip.