Quicksilver Inline Fuel Filter 864572 for MerCruiser Sterndrive & Inboard Engines — OEM-spec booster pump protection

Quicksilver 864572 is a direct-fit inline fuel filter designed to protect MerCruiser sterndrive and inboard gasoline engines by stopping tank debris from reaching the booster pump.

This compact replacement filter installs between the fuel tank and the booster pump to trap particles and contaminants that can damage the pump or downstream fuel system. Made to meet Mercury Marine original equipment specifications, the Quicksilver 864572 helps preserve fuel flow and support reliable engine starts and operation when paired with a fuel booster pump. Routine replacement is simple and recommended at least once per boating season or according to your owner's manual.

How does this filter protect my fuel system?

The filter captures sediment and rust from the tank before it reaches the booster pump inlet, reducing wear, clogs, and pump failure risk. It provides a first line of defense in the fuel stream and helps the entire fuel delivery system run cleaner.

• Traps particulates that originate in older or sloshing fuel tanks
• Prevents debris from entering and abrading the booster pump
• Maintains clearer fuel lines for better flow and longer pump life

Where and how is the 864572 installed?

Install the Quicksilver 864572 inline filter on the fuel line between the tank outlet and the booster pump inlet. Replacement is straightforward: remove the used filter, orient the new unit to match fuel flow direction, and secure hose clamps per manufacturer guidance.

• Mounts on fuel hose leading to booster pump
• Requires basic hand tools and hose clamps for secure fitting
• Observe flow-arrow direction printed on the filter housing

When should I replace this filter?

Replace the filter at least once every boating season and before winterizing, or follow the interval recommended in your engine's owner manual based on use. If you notice reduced fuel flow, sputtering, or unexplained performance changes, inspect and replace the filter promptly.

• Minimum: annually or before winter storage
• Inspect sooner with frequent or dirty-fuel operation
• Swap immediately if fuel delivery problems appear

Will this filter work with my Mercury/Mariner setup?

The 864572 is produced to Mercury Marine OEM specifications and is intended for MerCruiser sterndrive and inboard gasoline engines that use an external booster pump. It is an OEM-style replacement that aligns with original equipment fit and function.

• Designed to meet Mercury Marine original equipment specs
• Compatible with systems using a booster pump upstream of the engine
• Use manufacturer instructions to confirm fit for your model

Who is this for: The Quicksilver 864572 inline fuel filter is aimed at boat owners, captains, and marine technicians who maintain MerCruiser sterndrive or inboard gasoline engines with booster pumps. If you want an OEM-grade replacement to reduce the chance of pump damage and keep fuel delivery consistent throughout the season, this compact filter is a practical, easy-to-install component for routine marine engine care.