Description: Diesel, without 2.8L, without 6.6L, without flex fuel. Fuel components, 6.0L, with cng. Filler pipe, regular cab, without locking cap, with e10. Fwd. Pick Up Bed Delete. Dual Fuel Tanks. Single Fuel Tank. Awd. Helps provide a tight seal to keep your vehicle's fuel tank from releasing fumes Helps prevent elements from entering the fuel tank