Best Coupler Trailer Lock

The Master Lock 379ATPY Universal Trailer Coupler Lock is a highly rated security device, boasting a 4.6-star rating from over 4,657 reviews. Designed to fit 1-7/8", 2", and most 2-5/16" couplers, it offers universal compatibility with a wide range of trailers. The lock is chrome plated, ensuring corrosion resistance and long-term durability.

Its key lock mechanism is designed to prevent picking and prying, providing an added layer of security. Easy to install and featuring a re-keyable cylinder for keyed alike convenience, this lock is an essential accessory for trailer owners seeking to protect their property.