Best Coupler Lock for Bulldog Cast Head 2-5/16 Coupler

Updated 07/15/2021 | Published 07/13/2021

Question:

Looking for a premium coupler lock to fit a Bulldog Cast Head 2-5/16, 25K lb. Coupler

asked by: Dean R

Expert Reply:

There are a couple of options for very high-quality coupler locks for the Bulldog cast head coupler, with the absolute best being from AMPLock:

- AMPLock Trailer Coupler Lock for 2-5/16" Ball Couplers w/o Lip # AMP34FR

This lock is a beast for a number of reasons, starting with its ductile cast iron construction. Ductile cast iron is just not going to be something a thief is able to cut through or smash off it is far, far too strong for that and often used in things like automotive parts and heavy machinery due to its ruggedness. Along with its construction, the AMPLock # AMP34FR has a tumbler with close to one million key codes, so picking the lock is also not going to happen.

expert reply by: Kyle S