Plastic Deck Fill for Fuel and Water Tanks (38mm)

Enjoy simple and reliable tank filling with this 38 mm plastic deck fill, made of high-strength marine-grade plastic. It’s a lightweight and corrosion-proof solution for equipping your boat’s fuel or water tanks. Designed to withstand the marine environment, the UV-stabilized plastic will not corrode and resists degradation from sunlight and saltwater exposure. The fill features a screw-in cap that is easy to open by hand, yet secures tightly to prevent any spillage or ingress of water.

Versatile Use: This deck fill comes with two cap options: one labeled “Fuel” for gasoline or diesel tanks, and one labeled “Water” for fresh water tanks. These clearly marked caps help avoid any confusion during refueling or filling, ensuring each tank is filled with the correct liquid. The caps are often color-coded (for example, the water cap may be blue) for quick identification. Both caps attach via a plastic retainer strap, so they won’t fall overboard when opened and you won’t lose them.

Fits 38mm Hoses: The fill neck is designed for 38 mm (1-1/2 inch) hose connections, a common size for many small to mid-sized boats. Installation requires cutting a standard round hole in the deck. The unit’s flange has pre-molded countersunk holes for screws, allowing secure mounting to the deck or gunwale. Once installed, the low-profile cap sits nearly flush with the deck for a neat appearance and safe footing.

Recommended Applications: This plastic deck fill is perfect for smaller boats (approximately 4 to 8 meters in length), trailerable boats, and other craft where weight savings and cost-effectiveness are priorities. It’s an ideal choice for fuel or water tanks on small yachts, runabouts, fishing boats, or inflatables. While it doesn’t lock like metal deck fills, it offers reliable performance and ease of use, plus the benefit of no metal parts to corrode. You’ll appreciate that it won’t seize up due to rust, and it keeps your deck looking clean. For boaters seeking an affordable and practical deck fill solution, this plastic model gets the job done.