Coupler Locks & Trailer Locks

Master Lock® 1471DAT Keyed Different Long Trailer Coupler Latch Lock, Hardened Steel

Trailer Coupler Latch Lock. 3-1/2 in long shackle, 7 mm Dia shaft Barbell™ lock. Hardened steel to provide maximum protection. Fits UFP couplers and wider applications. Retail packaging, shelf pack quantity 4, master carton quantity 24.

Master Lock® 377DAT Keyed Different Trailer Coupler Lock, Stainless Steel, Natural

The Master Lock No. 377DAT features a trailer coupler lock, designed to fit 1-7/8in (48mm), 2in (51mm) and most 2-5/16in (59mm) trailer couplers. The advanced locking mechanism provides resistance to picking and prying. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.

Master Lock® 378DAT Keyed Different Trailer Coupler Lock, 2-5/16 in Dia Hole

Universal Trailer Coupler Lock. Universal coupler lock - fits 2-5/16 in. Hardened steel to provide maximum protection. Packaging explains application usage. K1 key blank. Retail packaging, master carton quantity 4.

REESE® TOWPOWER 72783 Universal Coupler Lock, Die Cast Steel

This REESE Towpower universal coupler lock prevents theft and keeps your trailer secure. The bright, yellow color is highly visible and deters thieves. It features a ratchet design with six locking positions for versatility, and is designed to fit 1-7/8 In., 2 In., and 2-5/16 In. couplers.
Patented design
Fits Most 1-7/8", 2" and 2-5/16" Trailer Couplers
Distance between lock shackle holes center to center is 4-1/2"
Includes two keys