Product Details: Equip your semi to be Ready for the Road Ahead™, with the Bendix D-2A Air Compressor Governor Valve, a crucial device that ensures enhanced air pressure control. By utilizing a sophisticated design, this replacement is able to help regulate the air pressure levels in a pneumatic system to guarantee safe operation within pre-determined limits. Prepared with durable materials to withstand extreme pressures while making adjustments as needed. FleetPride is your First Click in Heavy Duty®.