Trailer Spring Brake Valve - Replaces 51321X
Part no. 51321RX
item status Active
Product line Reman line
Remanufactured TRAMEC Sensing Trailer Emergency Valve (STEV) - CoreFree™
- To Assure Adequate Supply is Available from the Tractor
- The logic of the STEV valve assures that the trailer parking brakes will not release before there is sufficient air pressure in the reservoir to apply service brakes.