OER Parts offers a wide selection of Fuel Doors & Hardware for your 1973 Buick Apollo. OER Parts offers 1973 Buick Apollo Fuel Filler Neck Pocket Sleeve, 1973 Buick Apollo Fuel Filler Door, 1973 Buick Apollo Plastic Fuel Tank Filler Door, 1973 Buick Apollo Rear Fuel Door with Spring, 1973 Buick Apollo Fuel Filler Door Bumper, 1973 Buick Apollo Fuel Door Emblem, 1973 Buick Apollo Locking Billet Fuel Door, 1973 Buick Apollo Fuel Filler Door Tension Spring and 1973 Buick Apollo Fuel Door Lock.