Ensure your semi is Ready for the Road Ahead™ with fast and reactive rear air brakes, with the Sealco 4-Port 4.5 psi Emergency Relay Valve. To quickly apply compressed air to the rear air brakes, this replacement component acts as a gateway between the service reservoir and the air brakes. Fashioned with a durable metal body to tolerate extreme pressures and regular use.

FleetPride is your First Click in Heavy Duty®.