The 2-Position Manual Valve (part number 19513-H) is a quality replacement manual valve for the air system on Autocar terminal tractors. Sourced to meet or exceed Autocar OEM specifications, this part delivers dependable performance in the demanding conditions of warehouse, distribution center, and port operations. Weight: 1 lbs. Dimensions: 6" × 4" × 4". Yard Truck Specialists has been supplying genuine terminal tractor parts since 1986 — every order ships fast from our Pennsylvania warehouses with expert support available.