Relay Valves for Peterbilt, Kenworth, Freightliner, International, Volvo, Western Star, Hino, Caterpillar, Mack, and other Big Rigs.

R-12 Air Brake Relay Truck Trailer Valve - Vertical Ports
R-12 Air Brake Relay Truck Trailer Valve - Vertical Ports
Relay Valves
$67.99
2 Port Single Control Line Tractor/Trailer Relay Valve
2 Port Single Control Line Tractor/Trailer Relay Valve
Relay Valves
$67.99
RG2-2 Port Truck Trailer Air Brake Relay Valve
RG2-2 Port Truck Trailer Air Brake Relay Valve
Relay Valves
$57.99
FF2 Full Function Trailer Brake Valve - 3/4" Reservoir
FF2 Full Function Trailer Brake Valve - 3/4" Reservoir
Relay Valves
$103.99
FF2 Full Function Trailer Brake Valve - 3/4" Reservoir
FF2 Full Function Trailer Brake Valve - 3/4" Reservoir
Relay Valves
$103.99
R-12 Relay Valve 3/8" Delivery
R-12 Relay Valve
Relay Valves
$68.99
R-12 Relay Valve 1/2" Delivery
R-12 Relay Valve 1/2" Delivery
Relay Valves
$68.99
R-12P 4 Port Pilot Relay Valve
R-12P 4 Port Pilot Relay Valve
Relay Valves
$102.99
R-8 Relay Spring and Service Brake Valve - 90 Degrees Service Port
R-8 Relay Spring and Service Brake Valve - 90 Degrees Service Port
R-12 Relay Rear Axle Service Parking Brakes 4 Port Delivery Valve - Vertical Mount
R-12 Relay Rear Axle Service Parking Brakes 4 Port Delivery Valve - Vertical Mount
Relay Valves
$79.99
R-14 Relay Air Brake Spring and Service System Valve - Horizontal Delivery Ports
R-14 Relay Air Brake Spring and Service System Valve - Horizontal Delivery Ports
Relay Valves
$74.99
2 Delivery Port Tractor Trailer Service Relay Brake Valve - 3/8 Inch - 1/2 Inch NPT - Nipple Mount
2 Delivery Port Tractor Trailer Service Relay Brake Valve - 3/8 Inch - 1/2 Inch NPT - Nipple Mount
Relay Valves
$79.99
4 Port Trailer Relay Valve - 3/8" Delivery Port
4 Port Trailer Relay Valve - 3/8" Delivery Port
Relay Valves
$68.99
R-6 Style Service Relay Valve - Vertical Ports
R-6 Style Service Relay Valve - Vertical Ports
Relay Valves
$68.99
Control Line Relay Valve - 3/8" Ports
Control Line Relay Valve - 3/8" Ports
Relay Valves
$79.99
R-8P Style Pressure Equalizing Relay Valve
R-8P Style Pressure Equalizing Relay Valve
Relay Valves
$103.49
R-6 Style Brake Relay Valve
R-6 Style Brake Relay Valve
Relay Valves
$68.99
2 Port Anti-Compounding Relay Valve
2 Port Anti-Compounding Relay Valve
Relay Valves
$103.49