Trailer Coupler Lock, Fits 1-7/8 to 2-5/16 In, 3 Keys

Trailer hitch lock helps deter theft by securing your coupler fast, with a universal fit for 1-7/8 in, 2 in, and 2-5/16 in trailer couplers. Built with a tough aluminum alloy body and zinc alloy core, it’s designed to resist prying, jamming, and impacts while staying easy to lock and unlock. Powder-coated for rust and corrosion resistance, it’s ready for RVs, boats, utility trailers, and more.

• Fits 1-7/8 in, 2 in, and 2-5/16 in couplers for broad trailer compatibility.


• Delivers anti-pry security with an aluminum alloy body and zinc alloy core structure.


• Resists rust and corrosion with a durable powder-coated finish for outdoor storage.


• Includes 3 keys for convenient access and a quick backup for shared use.


• Installs in seconds—insert, adjust position, and lock with no tools required.

Keep your tow setup protected at the campsite, marina, driveway, or jobsite. This universal trailer coupler lock is designed for smooth day-to-day operation while adding a strong layer of security against tampering. Use it on RV campers, boat trailers, utility and cargo trailers, and off-road towing setups—anywhere you want a visible, rugged hitch deterrent. Confirm your coupler size before purchase for the right fit, then grab yours today.

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


• Materials: Aluminum alloy lock body; zinc alloy core


• Locking method: Key


• Keys included: 3


• Product size: 3.66 x 2.56 x 4.33 in (93 x 65 x 110 mm)


• Net weight: 1.32 lb (0.6 kg)


• Quantity: 1 pc


• Color: Red