Sierra 18-8958 Fuel System Fitting, Replaces Mercury 22-424254, Package of 2 for Mercury/Mariner Outboards

The Sierra 18-8958 is a fuel system fitting engineered for Mercury and Mariner outboard fuel systems. Sold as a package of 2, it is built to restore proper fuel line connection and sealing at the fitting point it replaces, using Sierra's standard of meeting or exceeding the original equipment part's performance. This fitting is a direct replacement for OEM part 22-424254, making it a straightforward swap when the original fitting has worn, cracked, or is leaking fuel.

Fuel system fittings like this one connect fuel lines to carburetors, fuel pumps, or other fuel system components on outboard engines, and a compromised fitting can lead to fuel leaks or poor engine performance. The 18-8958 is finished in white and sized at approximately 4 x 4 x 0.5 inches. Because Sierra parts are built as equivalents to the original Mercury/Mariner equipment, this fitting installs in place of the original 22-424254 fitting without modification. As with any fuel system component, confirm the fitting matches your specific outboard's fuel system configuration before installing.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-8958
• Package Quantity: 2 fittings per package
• Color: White
• Item Dimensions: 4 x 4 x 0.5 inches
• Weight: 0.5 pounds
• UPC: 808282361938
• Category: Engine Fuel System Parts

Fitment

• Mercury/Mariner outboard fuel systems

Replaces (OEM)

• 22-424254

Frequently Asked Questions

What does the Sierra 18-8958 fitting replace? The Sierra 18-8958 is a direct replacement for Mercury OEM part 22-424254, used in Mercury and Mariner outboard fuel systems.

How many fittings come in a package? The 18-8958 is sold as a package of 2 fittings, so you receive two fuel system fittings per order.

What outboard engines is this fitting designed for? This fitting is designed for Mercury and Mariner outboard fuel systems as a replacement fuel fitting.

What color is the 18-8958 fitting? It is white in color, matching the original Mercury/Mariner fitting appearance.

What are the dimensions of the fitting? Each Sierra 18-8958 fitting measures approximately 4 x 4 x 0.5 inches.

How much does the 18-8958 package weigh? The package of Sierra 18-8958 fittings weighs 0.5 pounds.

Is the Sierra 18-8958 an OEM part or aftermarket? It is a Sierra aftermarket part manufactured to meet or exceed the performance of the original Mercury equipment fitting, part number 22-424254.

Will this fitting work with any fuel line size? A specific fuel line diameter is not listed for the Sierra 18-8958, so confirm compatibility with your fuel system's fittings before ordering.

Can this fitting be used on Mercury Marine, Mercury Race, or Mercury Sport Jet outboards? Yes, the Sierra 18-8958 fitting is interchangeable with Mercury Marine, Mercury Race Outboard, and Mercury Sport Jet applications that use OEM fitting 22-424254.

What is included when I order the 18-8958? You receive a package of 2 fuel system fittings, part number Sierra 18-8958.