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

Tractor 4 Port Bobtail Brake Proportioning Standard Relay Valve
Tractor 4 Port Bobtail Brake Proportioning Standard Relay Valve

Tractor 4 Port Bobtail Brake Proportioning Standard Relay Valve

Bobtail Proportioning
$67.99
RT4 Multi-Function Trailer Spring Brake Control Relay Valve
RT4 Multi-Function Trailer Spring Brake Control Relay Valve

RT4 Multi-Function Trailer Spring Brake Control Relay Valve

Bobtail Proportioning
$78.99
R-12 Relay Brake Valve - 1/2" Delivery
R-12 Relay Brake Valve - 1/2" Delivery

Tractor LQ-5 Bobtail Limiting and Quick Ratio Release Air Brake Valve

Bobtail Proportioning
$48.99