Replacement cap fits Goiot plastic deck fills circa 1984. Colors: Black (Blackwater), Blue (Drinking water), and Yellow (Diesel) helps prevent filling mistakes. These are fabricated on demand out of UV resistant PETG plastic and include a nitrile O-ring at the top. I recommend using food-grade silicone grease (small tube included) on the drinking water and diesel fill cap o-rings to ensure a watertight seal. Construction features a thick wall for strength and a semi-hollow core so they float!
Items usually ship within 1 week of receiving payment for the order.