Fuel Caps and Gaskets

Fuel tank caps, cap gaskets and O-rings: 24 listings of locking and non-locking caps and seals from FTA, PAI Industries, Predator HD, Automann, Rig Tough, RoadForce, Freightliner and PACCAR.

By truck: Peterbilt 4-inch caps (11-04859-100 lever style, 11-04859-200 locking) and the 490-89 cap O-ring; Kenworth caps (PACCAR K22-1024, FTA-C-442L for K22-1023, Predator HD 249-4B) and cap gaskets (PACCAR 12105GTD, RoadForce RF99549513, Automann 572.1009.1UB); Freightliner caps (03-37017-000, plus 1/4-turn FTA caps for 03-37017-002 and 03-34466-000), the 9002935 tank cap gasket and the 2302B053 cap for MT45 and MT55 chassis; and Mack caps through PAI EFC-8397 (16MF316), EFC-8336 (16MF322M) and EFC-8387 (16MF312P2).

A leaking cap often needs only a new gasket or O-ring. Measure the cap's outside diameter (3.375 in. and 4 in. are common here) and match the OEM number on the cap.