Coupler Locks

Curt Safety Pin Curt Safety Pin
$8.99 SAVE: $1.00
$7.99
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Curt Safety Pin Curt Safety Pin
$8.99 SAVE: $1.00
$7.99
View Details
Curt Safety Pin Curt Safety Pin
$9.99 SAVE: $1.00
$8.99
View Details
Coupler locks are essential security devices used to protect trailers, tow vehicles, and other equipment from theft by preventing unauthorized coupling or uncoupling. These locks fit over the trailer’s coupler, securing it in place and making it impossible to attach or detach the trailer from the towing vehicle. Available in various types, coupler locks are made from durable materials like high-strength steel, providing resistance to tampering and harsh environmental conditions.


There are several types of coupler locks to suit different needs. Off-vehicle coupler locks are designed to be easily removed and stored when not in use, offering a convenient solution for securing trailers in the off-season or while not in use for extended periods. Pin lock coupler locks are a common choice, using a heavy-duty pin mechanism that slides through the coupler's locking hole to secure it in place, making it impossible to unhook the trailer without removing the pin. Safety pin coupler locks provide an additional layer of security by using a safety pin and clip system, preventing accidental uncoupling or theft by ensuring that the pin cannot be removed unless the safety mechanism is disengaged.


Each type of coupler lock is designed to offer robust protection, ensuring your trailer remains secure and protected from theft or unauthorized access. Whether for commercial or personal use, coupler locks are an indispensable security measure to safeguard valuable trailers, equipment, and cargo.

Frequently Asked Questions

Couplers add security to your towing setup. They’re mechanisms that attach the tongue of the trailer to the vehicle’s hitch ball. This is to ensure a secure connection between the two for safe towing. There are a few different types of coupler locks, including bulldog, A-frame, and straight tongue couplers. Bulldog couplers are heavy-duty and usually designed for bulkier trailers. A-frame couplers are most commonly used on utility trailers. Straight-tongue couplers are designated mostly for lighter trailers, such as boat trailers. They all come with a latch or lock system to securely fasten them to the hitch ball. This trailer hitch accessory prevents disconnection and ensures safe towing, allowing for carefree travel.