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.

• Fits 1-7/8 in, 2 in, and 2-5/16 in couplers; confirm coupler size before purchase


• Delivers prying- and jamming-resistant protection with a reinforced core and locking components


• Adjusts to 11 height settings to match different trailer tongues and coupler depths


• Resists rust and corrosion with chrome plating and powder-coated finish for outdoor storage


• Includes 2 keys for quick lock/unlock without tools at the ramp, campsite, or driveway

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.

• Applicable coupler sizes: 1-7/8 in, 2 in, 2-5/16 in


• Height adjustment: 11 positions


• Locking method: Key


• Keys included: 2


• Materials: Aluminum alloy lock body; carbon steel lock beam


• Finish: Chrome plating + powder coating


• Product size: 7.6 x 5.51 x 2.76 in (193 x 140 x 70 mm)


• Net weight: 2.87 lb (1.3 kg)