Trailer Coupler Lock 2-5/16 In, 3 Keys, Carbon Steel

Trailer hitch lock for 2-5/16 in (58.7 mm) couplers helps deter theft by securing your trailer coupler when parked or stored. Built with a carbon steel lock body and a stainless steel lock ball, it’s designed to resist prying, impact, and harsh weather exposure. The powder-coated finish supports rust and corrosion resistance for outdoor use, while the key-operated design makes locking and unlocking fast—no tools required.

• Fits 2-5/16 in (58.7 mm) trailer couplers; confirm coupler size before purchase


• Delivers anti-pry protection with carbon steel body and reinforced core structure


• Resists weather with powder-coated surface to help reduce rust and corrosion outdoors


• Includes 3 keys for quick lock/unlock access at home, storage, or on the road


• Works on RVs, boat trailers, off-road vehicle trailers, and utility/cargo towing setups

Secure your trailer with a universal-fit coupler lock built for real-world towing and storage. The snug ball-style design helps block the coupler from connecting, adding a visible layer of security for campsites, driveways, marinas, and job sites. With a smooth key operation and durable materials chosen for outdoor exposure, it’s a practical upgrade for anyone who leaves a trailer unattended. Grab yours today and lock up before your next trip.

• Applicable coupler size: 2-5/16 in (58.7 mm)


• Lock body material: Carbon steel


• Lock ball material: 304 stainless steel


• Locking method: Key


• Finish: Powder-coated for corrosion resistance


• Dimensions: 5.12 x 5.71 x 5.31 in (130 x 145 x 135 mm)


• Net weight: 11.24 lb (5.1 kg)


• Quantity: 1 piece


• In the box: Lock + 3 keys