Description

The Mercury Quicksilver 864572A1 (Mercury format 35-864572A1) is a genuine OEM inline fuel filter kit designed for MerCruiser sterndrive and inboard gasoline engines that use a fuel booster pump. The filter installs in the fuel line between the fuel tank and the boost pump to prevent debris from entering the fuel system.

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Key Specifications

• Part Number: 864572A1 (Mercury format 35-864572A1)

• Type: Inline fuel filter kit

• Installation Location: Between the fuel tank and fuel boost pump

• OEM Brand: Mercury Marine / Quicksilver

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What’s Included

The kit includes the components required for installation:

• Inline fuel filter element

• Hose fittings

• Fuel line clamps

This allows quick replacement without sourcing additional hardware.

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Compatible Engines

Commonly used on MerCruiser gasoline sterndrive and inboard engines with a fuel booster pump, including models such as:

• 350 MAG MPI

• Black Scorpion 350 / 377

• MX 6.2L MPI

• 383 MAG Stroker

• Other MerCruiser MPI engines in similar serial ranges

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Function

The inline fuel filter helps protect the fuel system by:

• Capturing dirt, rust, and debris from the fuel tank

• Preventing contaminants from reaching the boost pump and injectors

• Maintaining clean fuel flow and engine performance

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Service Recommendation

Mercury recommends replacing the inline fuel filter at least once per boating season or during routine maintenance to ensure proper fuel system operation.

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Fitment Tip:
Always confirm compatibility using the engine model and serial number, as MerCruiser fuel systems vary between carbureted, MPI, and high-performance engines.

Shipping:

OEM parts ship same or next day for fast Canada wide shipping.

Technical Specifications:

• Type: Complete fuel filter service kit
• Compatible with: Mercury MerCruiser marine engines
• Part Number: 864572A1
• Kit includes: Fuel filter element and all necessary service components