Pressure Differential Warning Switch Repair Kit Deluxe

This is a very very important part of your braking system and it must be maintained for safety. As with everything age will break down the seals in the PDWA valve and it will leak all down your firewall. With this kit it will replace the warn piston with new O-rings, or if you have the older cup style seals with is your only choice to replace the piston that will accept the improved O Ring Style seals . Cross Reference, BAU1704, BAU1704A, HK153, 181-995