Genuine OEM 575000 cast coupling head lock kit designed for Knott-Avonride 50mm ball coupling heads rated up to 3500kg. Complete with replacement barrel lock mechanism, 2 keys, keyhole cover and fitting instructions. Commonly fitted to caravans, horseboxes, plant trailers, flatbeds, fuel and water bowsers. Helps prevent theft by locking the coupling head from operation and can be paired with a hitch lock or security ball for enhanced protection.
