2PK 3"Locking Fuel Tank Cap Fit w/VNL HD Truck Replace 20511590, VOL20770691

Replaces 20511590, VOL20770691, 0770691, FTA-C-722L, FTA-C-723, 20770691, 20770691C8T. It’s a perfect truck part that securely seals the opening point of the fuel tank. It eliminates fuel evaporation, ensures fuel efficiency, and reduces emissions.