Sierra Inline Fuel Filter 18-79965 for Mercury Outboard Engines

The Sierra Inline Fuel Filter 18-79965 is a replacement fuel filter designed for Mercury outboard engines. It installs directly into the fuel line to trap dirt, rust, water, and other contaminants before they reach the carburetor or fuel injection system, helping protect internal engine components from debris-related wear and fuel delivery problems. As an inline design, it mounts within the existing fuel hose run rather than requiring a separate filter housing, making it a straightforward addition or replacement in a boat's fuel system.

This filter is sold as a single unit (1 count) and is intended for routine maintenance or as a replacement when an existing inline fuel filter has become clogged or worn. Keeping a clean, functioning fuel filter in place supports consistent fuel flow and helps guard against the performance issues that come with contaminated fuel, such as rough running, stalling, or reduced power.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-79965
• Product Type: Inline Fuel Filter
• Application: Mercury Outboard
• Unit Count: 1
• Weight: 0.2 pounds
• UPC: 808282387792

Fitment

Designed for use on Mercury outboard engines.

Replaces (OEM)

No OEM cross-reference numbers are listed for this part.

Frequently Asked Questions

What is the Sierra 18-79965 fuel filter used for? The Sierra 18-79965 is an inline fuel filter that installs in the fuel line of a Mercury outboard engine to filter out dirt, rust, and other contaminants before they reach the engine's fuel system.

Is the 18-79965 filter sold individually? Yes, the Sierra 18-79965 inline fuel filter is sold as a single unit, with a quantity of one filter per package.

How much does the Sierra 18-79965 fuel filter weigh? It weighs 0.2 pounds.

What engines is the 18-79965 fuel filter designed for? This inline fuel filter is designed for use on Mercury outboard engines.

Does the 18-79965 filter require a separate filter housing? No, it is an inline design that installs directly into the existing fuel hose run rather than requiring a separate canister or housing.

What brand makes part number 18-79965? Sierra manufactures the 18-79965 inline fuel filter.

When should the 18-79965 fuel filter be replaced? It should be replaced as part of routine fuel system maintenance or when an existing inline filter has become clogged or is no longer filtering effectively.

What is included when ordering the 18-79965? The order includes one Sierra 18-79965 inline fuel filter.

Does the Sierra 18-79965 filter protect against water in the fuel? Yes, the inline design of the 18-79965 filter traps water along with dirt and rust before it can reach the carburetor or fuel injection system.

What is the UPC for the Sierra 18-79965 fuel filter? The UPC for this filter is 808282387792.