Description:Air ratio control valve part # 8W-6908 sequences front and rear brake actuation to reduce front break wear. Cat valves are manufactured to precise specifications and are built for durability, reliability, productivity.Attributes: Aluminum air ratio control valve Max Operating Pressure: 1034 kPa (150 psi) Connector Type: 3/8-18 NPTF Female Pipe (2X)Application:Consult your owner's manual or contact your local Cat Dealer for more information.