Fuel Cap Seals, XJ-6 and XJ-12, Later Unleaded Type, Pair. Supplied with attachment rivets. Manufactured by XKs Unlimited. Buna-n Special Fuel Resistance material. One bag of two pieces = one part. Note: These are often ordered wrong. This part is a solid disc with three holes. It is supplied with rivets. If part required is 2.5" outer diameter with 1.5" hole, then 03-1500 is required.