1 Superior Rust Resistance: The deck fill cap is made of 316 stainless steel, providing exceptionally strong rust resistance. This allows it to be used in harsh saltwater environments. 2 Exceptional Durability: This replacement gas fill cap is incredibly sturdy and durable. Its strength and stability ensure its long term usability. 3 Convenient Size: With a diameter size of 38mm, the product has a convenient size that is suitable for various sizes of boats. It is also easy to install and maintain. 4 Secure and Leakproof: The boat fuel cap is designed to provide a secure and leak proof seal, preventing any fuel, water, or other liquids from escaping the tank. 5 Versatility: The replacement cap is not limited to use on fuel tanks alone. It can also be used on water tanks, waste tanks, or any other type of tank that requires a secure and durable cap.

What's in the box
4 x Boat Fuel Tank Cap