Adjustable Coupler Latch Lock - Stainless Steel

The Adjustable Coupler Latch Lock by WEIGH SAFE is a stainless steel security device engineered to prevent trailer theft and unauthorized coupling. As a mechanic who regularly works with towing systems, I recognize this lock addresses a critical vulnerability in trailer security—the coupler itself. This 4½-inch latch lock secures the coupler jaw to the hitch ball, making it impossible for thieves to simply unhitch and steal your trailer without the correct key. Whether you're protecting a utility trailer, boat hauler, or cargo rig, this adjustable design accommodates various coupler styles and hitch configurations.

Constructed from premium stainless steel, the adjustable coupler latch lock resists corrosion from road salt, moisture, and harsh weather—critical for longevity in demanding towing environments. The 1/4-inch diameter pin provides substantial shear strength, and the adjustable mechanism allows positioning across different coupler heights and styles without modification. Two hardened keys ship with each lock, enabling you to secure the coupler in seconds and retrieve the key quickly. The compact 4 x 1.5 x 9-inch footprint adds minimal weight (0.5 lbs) while delivering maximum security without interfering with coupling or uncoupling operations.

This lock benefits anyone who leaves a trailer unattended—construction crews, landscapers, boat owners, and RV enthusiasts—especially in high-theft areas. Installation requires no drilling or permanent modification; simply thread the pin through the coupler latch and turn the key. The stainless steel construction means no painting or maintenance is needed, even after years of seasonal use. For towing professionals and DIY mechanics alike, the Adjustable Coupler Latch Lock delivers straightforward, cost-effective security that doesn't compromise hitch functionality or compatibility with standard ball mounts.