Plug Expansion

The Plug Expansion (part number 3900955) is a quality replacement expansion for the electrical system on Cummins-powered yard trucks and terminal tractors. Sourced to meet or exceed Cummins OEM specifications, this part delivers dependable performance in the demanding conditions of warehouse, distribution center, and port operations. Weight: 1 lbs. Dimensions: 4" × 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.