Discover top-quality air brake valves and related products for semi-trucks, including remanufactured heavy-duty trailer ABS assemblies with 2 or 4 sensor connectors, quick release valves (QR-1 style) with various port and mounting options, air governors (D-2 style), and a wide range of dash control valves such as PP-2, PP-3, and MV-3 styles. Our extensive inventory also features modulating relay valves (R-7 style), relay emergency valves (RE-6 style), spring brake valves (SR-1 and SR-5 styles), limiting and quick release valves (LQ-4 style), single and dual circuit brake valves (E-3 and E-6 styles), and a variety of knobs and pin kits for parking and trailer air supply. Enhance your braking system with our reliable relay valves (R-6, R-12P, R-12H, R-14H styles), automatic heated drain valves, transmission valves, purge valves, and height control leveling valves. We also offer specialized products like the TPHD 2-piece clutch brake, TPHD clutch pilot bearing, and TPHD low-profile drain valve for air tanks. Ensure safety and performance with our pressure protection valves (PR-2, PR-4 styles), tractor protection valves (TP-3, TP-5 styles), and full-function valves (FF-2 style). Shop now for premium air brake components and keep your semi-truck running smoothly and safely. Additionally, explore our selection of air horns, brake lights, Cat C12 intake manifold air temperature sensors, Cat C12 air charge temperature sensors, air hose fittings, Fram air filter lookup, Airdog systems, air horns for trucks, air horn in truck, and air horn for truck. Enhance your vehicle's performance and safety with our top-notch products. Shop now and experience the difference!