Moeller Marine 14 Gallon Topside Fuel Tank with Direct Sight Gauge, Part 031615

The Moeller Marine 031615 is a 14 gallon topside permanent fuel tank built for boats built before 2011. It is rotationally molded from cross-linked polyethylene with UV-stabilized resin, giving it a rigid, corrosion-resistant construction designed to handle today's highly corrosive ethanol fuels without degrading. The tank includes a direct sight gauge so boat owners can visually check fuel level without a separate gauge sender, along with a fill cap (part 305185) and a withdrawal fitting (part 031615PU) sized 3/8 inch NPT x 1/4 inch NPT. Measuring 43.00 inches long by 15.00 inches wide by 8.71 inches high with the cap installed, this tank is intended for topside mounting in bench style, center console, pontoon, deck, and jon boat layouts. Construction conforms to ABYC, NMMA, and U.S. Coast Guard regulations for permanent marine fuel tanks. As a topside-mount design, it sits above deck level rather than under a console or in a below-deck compartment, making it a straightforward swap for aging topside tanks on older boats.

Specifications

• Brand: Moeller
• Manufacturer Part Number: 031615
• Capacity: 14 gallons (53 liters)
• Length: 43.00 inches (1092 mm)
• Width: 15.00 inches (381 mm)
• Height: 8.71 inches (221 mm), measured with cap
• Cap Part Number: 305185
• Withdrawal Fitting Part Number: 031615PU
• Fitting Size: 3/8 inch NPT x 1/4 inch NPT
• Material: Rotationally molded, cross-linked polyethylene with UV-stabilized resin
• Weight: 19 pounds

Fitment

• For boats built before 2011
• Topside mounting in bench style, center console, pontoon, deck, and jon boat designs

Frequently Asked Questions

How many gallons does the Moeller 031615 fuel tank hold? The Moeller 031615 topside fuel tank has a 14 gallon (53 liter) capacity.

What boats is this fuel tank designed for? Moeller part 031615 is designed for boats built before 2011 and is intended for topside mounting in bench style, center console, pontoon, deck, and jon boat layouts.

What are the dimensions of the 031615 tank? With the cap installed, the tank measures 43.00 inches long by 15.00 inches wide by 8.71 inches high (1092 mm x 381 mm x 221 mm).

How much does the 031615 fuel tank weigh? The Moeller 031615 weighs 19 pounds.

What material is the Moeller 031615 tank made from? It is rotationally molded from cross-linked polyethylene with UV-stabilized resin, a construction chosen to resist today's corrosive ethanol fuels.

Does this tank include a fuel gauge? Yes, the 031615 tank has a direct sight gauge built in, letting you check fuel level visually without a separate gauge sender.

What size are the fittings on the 031615 tank? The withdrawal fitting (part 031615PU) is sized 3/8 inch NPT x 1/4 inch NPT.

What is the part number for the fill cap on this tank? The fill cap used on the Moeller 031615 tank is part 305185.

Is the Moeller 031615 tank approved for marine use? Yes, construction conforms to ABYC, NMMA, and U.S. Coast Guard regulations for permanent marine fuel tanks.

Where is the 031615 tank meant to be mounted? It is a topside fuel tank, meaning it mounts above deck level rather than below deck or under a console.

Is the withdrawal fitting included with the tank? Yes, the 031615PU withdrawal fitting and the 305185 cap are part of the Moeller 031615 tank assembly.

Can this tank handle ethanol-blended fuel? Yes, the Moeller 031615 is constructed to handle today's highly corrosive ethanol fuels without degrading.