Sierra 18-80412 Fuel Tank Connector, 1/4 Inch NPT Female, Replaces 22-816856T2, Fits Mercury 65-125 HP Outboards

The Sierra 18-80412 is a fuel tank connector used to join the fuel tank fitting to the engine-side fuel hose on compatible outboard motors. It features a 1/4 inch NPT female thread on the tank side and mates with a 5/16 inch male hose connector, allowing a secure, leak-resistant connection between the tank fitting and the fuel line. The connector is built from metal with a machined exterior finish and a white color, giving it a durable, corrosion-resistant construction suited to marine fuel system use.

This connector is a direct replacement for OEM part 22-816856T2 and is designed to restore proper fuel connector function on outboards that use this fitting. It mates with the separate Sierra 18-80410-1 connector to complete the full fuel line hookup. The 18-80412 fits a range of Mercury outboard engines, including 4-cylinder, 3-cylinder, and jet drive models spanning multiple horsepower ratings, making it a common replacement part for fuel system repairs and maintenance on these engines.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-80412
• Thread Size: 1/4 inch NPT (Female)
• Hose Connector Size: 5/16 inch (Male)
• Connector Type: Quick-Connect
• Material: Metal
• Exterior Finish: Machined
• Color: White
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.08 pounds
• UPC: 808282227470
• Mates With: 18-80410-1

Fitment

• Mercury 100 HP 4-cylinder (1988-99)
• Mercury 115 HP 4-cylinder (1989 & up)
• Mercury 125 HP 4-cylinder (1994 & up)
• Mercury 65 Jet (1994 & up)
• Mercury 75 HP 3-cylinder (1987 & up)
• Mercury 80 Jet (1994 & up)
• Mercury 90 HP 3-cylinder (1987 & up)

Replaces (OEM)

• 22-816856T2

Frequently Asked Questions

What thread size does the Sierra 18-80412 fuel tank connector use? The Sierra 18-80412 has a 1/4 inch NPT female thread on the tank side, which screws into the fuel tank fitting.

Does the 18-80412 replace Mercury part 22-816856T2? Yes, the Sierra 18-80412 is a direct replacement for OEM part 22-816856T2.

What outboard engines fit the Sierra 18-80412 fuel connector? It fits Mercury 100 HP 4-cylinder outboards (1988-99), 115 HP 4-cylinder (1989 & up), 125 HP 4-cylinder (1994 & up), 65 Jet (1994 & up), 75 HP 3-cylinder (1987 & up), 80 Jet (1994 & up), and 90 HP 3-cylinder (1987 & up).

What material is the 18-80412 connector made from? The 18-80412 is made of metal with a white, machined exterior finish.

What are the dimensions of the Sierra 18-80412? It measures 0.39 x 0.39 x 0.39 inches.

How much does the 18-80412 fuel connector weigh? The Sierra 18-80412 weighs 0.08 pounds.

What part does the 18-80412 connect to on the other side? It mates with the Sierra 18-80410-1 connector, a separate part with its own part number, to complete the fuel line hookup.

Is the 18-80412 a male or female fitting? The tank-side NPT thread on the 18-80412 is female, while the hose-side connector is a 5/16 inch male fitting.

What type of connector is the 18-80412? It is a quick-connect style fuel tank connector.

What color is the Sierra 18-80412? The 18-80412 fuel tank connector is white.

How many pieces come with the 18-80412? The 18-80412 ships as a single connector fitting.