RETRUE Trailer Tongue Coupler Locks 4PC Keyed-Alike, Black Zinc-Alloy, 1/4" Pin for Up to 3/4" Span

RETRUE Trailer Tongue Coupler Lock is a keyed-alike, padlock-style hitch pin set that secures latch-type couplers up to 3/4-inch span with four black zinc-alloy locks and eight matching keys.

If you tow trailers, boats, or cargo carriers, the right coupler lock makes deterring theft simple and quick. This 4-piece keyed-alike kit from RETRUE pairs corrosion-resistant components with an easy 1/4-turn key action so you can lock and unlock your trailer tongue quickly while keeping your trailer locked to the hitch when unattended.

How does the RETRUE coupler lock fit different trailers?

The lock uses a 1/4-inch-diameter locking pin designed for latch-style couplers and will accommodate a maximum latch span of approximately 3/4 inch. Its padlock-style form slips through the coupler latch and secures by turning the flat key several times.

• Fits latch-type couplers with up to 3/4-inch span
• 1/4-inch diameter pin for common hitch openings
• Padlock-style profile works with standard coupler designs
• Four identical locks included for multiple trailers or backup

What materials and finishes protect the lock outdoors?

RETRUE builds the lock body from high-strength zinc alloy with a black painted finish to resist surface wear. The internal coupler pin receives a durable zinc plating to guard against corrosion, extending usable life when exposed to road grime and weather.

• Zinc-alloy lock body for impact resistance
• Black painted finish reduces visible wear and glare
• Zinc-plated coupler pin resists rust and corrosion
• Construction balances strength with corrosion protection

How easy is it to lock and unlock while on the road?

The RETRUE hitch lock is designed for simple operation: a 1/4-turn lock activation and a flat key that requires 5–7 spins to open or close. This straightforward motion makes securing or releasing your trailer quick, even in low-light conditions or when wearing gloves.

• Simple 1/4-turn locking mechanism
• Flat key operation — spin 5–7 times to unlock
• Padlock-style shape provides clear visual deterrence
• Four locks let you keep spare keys at home or with partners

What comes in the box and where can I get support?

This package contains four keyed-alike trailer coupler locks and eight matching keys, so all locks use the same key and you have spares. If you experience any issues, RETRUE offers customer support accessible through the product page 'Ask a Question' button for prompt assistance.

• 4 keyed-alike coupler locks for multiple trailers
• 8 identical flat keys included for convenience
• Responsive customer support via online question form
• Documentation and packing suitable for storage or gifting

Who is this for: The RETRUE Trailer Tongue Coupler Lock is suited to trailer owners, weekend boaters, landscapers, and fleets that need durable, easy-to-use protection without complex installation. If you want a straightforward keyed-alike solution that balances strength, weather resistance, and quick operation, this four-piece kit is a practical choice.