Billet Aluminum Fuel Filler Neck w/ Pop-Up Gas Cap 91012521

As featured on Classic Trucks Week to Wicked. Watch the transformation here! Polished billet aluminum pop-up flush mount gas cap is 2-1/2 inch O.D., 1.600 inch tall, and works with a 1-1/2 inch hose.The Pop-Up gas cap, 910-12521, does not have a vent hole. Some air might get past the threads that hold the cap on, but there is no dedicated venting passage.910-12521 Dimensions (PDF)