The stainless steel coupler pin lock fits couplers from ½-inch to 3 3/8 inches in 1/8-inch increments. BOLT’s coupler pin lock secures the locking lever from any movement and serves dual purposes: ...

In this "Weekend Workbook article, Jim Hendricks of Boating Magazine, describes the procedure for replacing a malfunctioning boat trailer surge brake actuator-coupler. Learn what tools you'll need, ...

If you own a trailer or RV, you'll want to invest into a quality trailer hitch lock. See the best trailer hitch locks at AutoGuide.com.

The BOLT Off-Vehicle Coupler Lock deters trailer theft by securing a trailer when it is not attached to a vehicle.

Most of these locks attach to the pin on your coupler or wrap tightly around it to restrict access to the ball. Here are the best trailer locks that are for sale on Amazon.

In a nutshell, the Max Coupler is a simple yet effective weld-on trailer coupler comprised of robust steel parts and a durable polyurethane bushing to help absorb vibrations.

Complete, bolt-on couplers popped up below $20 but there was no way I was cutting through any of that perfectly good galvanized frame just to bolt on a bright and shiny replacement.

E-Z Latch ball coupler is an exclusive, new coupler design by Demco. This patent pending coupler latches when lowered over its appropriate sized hitch ball. It's offered in both 2- and 2 5/16-in ...

GREENSBURG, Ind. -- A rollover involving one of his tanker trucks has prompted an Indiana-based entrepreneur to design an upper coupler that promises to improve safety and extend trailer life.