Quicksilver Inline Fuel Filter for MerCruiser Sterndrive/Inboard – 864572 OEM‑Spec, Seasonal Replacement

Quicksilver 864572 is a direct-replacement inline fuel filter designed to stop tank debris from reaching your booster pump on MerCruiser sterndrive and inboard gasoline engines.

This compact, OEM-spec filter installs between the fuel tank and the booster pump to capture particles and contaminants before they can damage the pump or downstream components. Built to Mercury Marine specifications, the Quicksilver 864572 is intended for seasonal replacement and straightforward service—remove the old cartridge and snap the new one into place. It’s a simple, cost-effective part that protects critical fuel-system hardware and helps maintain reliable engine performance.

How does this filter protect my booster pump?

The inline filter traps sediment, rust, and other debris that can accumulate in gasoline tanks, keeping the booster pump inlet clear. By intercepting contaminants before they reach the pump, it reduces wear and the risk of clogging, which helps maintain consistent fuel flow and prolongs pump life.

• Installed between tank and booster pump for upstream protection
• Captures particles that could abrade or clog pump internals
• OEM-spec design minimizes fitment issues and ensures proper flow

When should I replace the Quicksilver 864572 filter?

Quicksilver recommends replacing this inline fuel filter at least once each boating season and whenever your owner’s manual suggests based on engine hours or conditions. Changing the filter before winterizing prevents trapped contaminants from staying in the system over storage, and replacing after heavy use or contaminated fuel keeps the system performing reliably.

• Replace seasonally or per engine manufacturer guidance
• Swap before storage/winterizing to avoid trapped moisture and deposits
• Change sooner after suspected fuel contamination or unusual engine performance

Will this filter fit my MerCruiser sterndrive or inboard engine?

The 864572 is offered as a direct replacement for MerCruiser sterndrive and inboard gasoline engines that use a booster pump and the inline cartridge style filter. It’s produced to meet Mercury Marine original equipment specifications, so compatibility is high when your engine requires this filter format. Always verify your engine model and the part number in your owner’s manual before purchasing.

• Designed for MerCruiser sterndrive and inboard gasoline engines with booster pumps
• Manufactured to Mercury Marine OEM specifications for fit and performance
• Check the owner’s manual or existing part number to confirm match

How difficult is installation and maintenance?

Installation is intentionally simple: remove the old inline filter and insert the new unit in the same orientation. No special tools are typically required, but follow safety steps—relieve pressure and avoid fuel spills. Routine inspection during seasonal preps will help you catch restrictions early and maintain fuel system reliability.

• Quick cartridge swap—remove old filter, insert new unit
• Minimal tools needed; follow fuel-safety precautions during service
• Regular inspection recommended to identify leaks or clogs

Who is this for: The Quicksilver 864572 inline fuel filter is for boat owners, mechanics, and fleet operators who run MerCruiser sterndrive or inboard gasoline engines with a booster pump and want OEM-quality protection for the fuel system. It’s ideal for those who prefer genuine Mercury/Quicksilver replacement parts to preserve component performance, minimize downtime, and keep seasonal maintenance quick and predictable.

Features:

• Installed between the fuel tank and the booster pump
• Prevents debris that may be in the gasoline fuel tank from getting to the boost pump inlet
• Replace the filter once each season or as your owner's manual recommends based on engine use
• Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive