Transfercase air shift control valve for the M35A2, M35A3 series and all M939 series. Also used as a brake lock valve on the M945 W/W. P/N 10924753, NSN 4820008328077. 1/8 inch pipe threads on all three ports. 1 supply and 2 delivery ports. Delivery ports are on sides of valve. When valve is "off" delivery ports vent to atmosphere.