Cenipar Trailer Hitch Lock — Heavy-Duty Combination Coupler Lock, Yellow, Fits 1-7/8"–2-5/16"

The Cenipar Trailer Hitch Lock is a heavy-duty, keyless combination coupler lock that secures 1-7/8", 2" and 2-5/16" trailer balls to deter theft and protect your RV, boat, or trailer cargo.

If you tow trailers, campers, or boats, a visible, durable coupler lock is one of the simplest ways to reduce the risk of theft. This Cenipar model uses a four-digit combination and an adjustable ratchet to fit the most common ball sizes and coupler depths. Constructed from hardened steel and corrosion-resistant aluminum with waterproof internal parts and a bright yellow finish, it balances visibility, weather resistance, and mechanical strength for long-term outdoor use.

How does this lock fit different coupler and ball sizes?

The Cenipar lock features an adjustable ratchet with eleven locking positions and is designed to work with the three standard trailer ball diameters. You set the ratchet depth to match your coupler, then snap the lock over the ball and rotate the combination to secure it. No keys are required, and the default code is 0000 to get started.

• Fits 1-7/8", 2", and 2-5/16" tow balls
• 11 locking positions for different coupler depths
• Four-digit combination, default 0000, user-changeable

What materials and weather protection does it offer?

Key load-bearing parts are made from heavy-duty steel and quality aluminum to resist cutting and bending. The exterior is finished with an anti-corrosion coating while internal components include waterproof and dust-proof seals, helping the mechanism operate reliably in rain, salt air, or muddy conditions. Those protections extend the lock’s lifespan and reduce maintenance needs.

• Hardened steel and aluminum construction
• Anti-corrosion exterior coating
• Waterproof and dust-resistant internal seals

How secure is the combination mechanism and does it replace keys?

The four-digit combination eliminates the need for a physical key, reducing the risk of lost keys or unauthorized duplication. You can change the default code (0000) to any four-digit sequence you prefer, and the robust ratchet and insertion design resist prying and simple drilling attempts. While no device is invulnerable, this lock serves as a strong visual and physical deterrent that significantly lowers the likelihood of opportunistic theft.

• Keyless four-digit combination, user-changeable
• Ratchet and insertion hole designed to resist prying
• High-visibility yellow finish deters attention

What should I expect from setup, daily use, and support?

Setup is straightforward: set or keep the default combination, adjust the ratchet to fit your coupler, close over the ball, and scramble the dials. Daily use is simple and fast—no fumbling with keys—and the bright color makes the lock easy to spot. Cenipar offers a 365-day customer support policy to resolve any fit, function, or quality concerns.

• Quick adjust-and-lock operation for fast hookups
• Visible deterrent for parking, storage, and campsites
• 365-day customer support for issues or questions

Who is this for? The Cenipar Trailer Hitch Lock is aimed at trailer owners, RV and boat enthusiasts, and anyone who parks a trailer or camper in public or semi-public places and wants a reliable, keyless deterrent. It’s a practical choice for weekend travelers, seasonal campers, storage lot users, and commercial fleets that need a simple, adjustable solution to reduce the risk of theft and tampering.