Quicksilver 866340Q03 MerCruiser Marine Oil Filter – 4.5L & 6.2L

Quicksilver 866340Q03 MerCruiser Marine Oil Filter

The Quicksilver 866340Q03 Oil Filter is a replacement marine engine oil filter designed for a wide range of MerCruiser sterndrive and inboard engines. It is also compatible with select Mercury Marine 4.5L and 6.2L engines.

Manufactured to meet Mercury Marine original equipment specifications, the Quicksilver 866340Q03 helps remove damaging contaminants from engine oil while providing reliable filtration and protection in demanding marine environments.

MerCruiser Engine Compatibility

The Quicksilver 866340Q03 marine oil filter is designed for compatible:

• MerCruiser sterndrive engines
• MerCruiser inboard engines
• MerCruiser high-performance engines manufactured by General Motors
• Mercury Marine 4.5L engines
• Mercury Marine 6.2L engines
• Select GM-based MerCruiser marine engines

Important: This filter is not designed for V6 applications with the oil filter mounted directly on the engine block. Always verify your existing oil filter number and engine configuration before ordering.

Oil Filter Cross-Reference & Interchange Numbers

The Quicksilver 866340Q03 cross-references with several commonly used marine and engine oil filters, including:

• Quicksilver 866340Q03
• Pennzoil PZ3
• Pennzoil PZ52
• PCM R077002
• Volvo Penta 835440-9
• NAPA 1069
• WIX 51069
• Fram CPH30
• Fram PH30
• ACDelco PF25
• Penske PN30
• Purolator L20049
• Castrol CM30
• Motorcraft FL10
• Quaker State QS30

Always verify filter specifications and your existing part number before using a cross-reference to confirm compatibility.

Key Features

• Designed for compatible MerCruiser sterndrive and inboard engines
• Manufactured to meet Mercury Marine original equipment specifications
• M-Pleated filter media helps remove damaging oil contaminants
• Anti-drainback valve helps maintain start-up lubrication and reduce dry starts
• Heavy-duty metal shell is 50% thicker than conventional filters
• Durable corrosion-resistant finish for marine environments
• Spin-on design for straightforward replacement
• Designed for reliable engine oil filtration in demanding marine applications

Product Details

• Brand: Quicksilver
• Part Number: 866340Q03
• Product Type: Marine Engine Oil Filter
• Filter Style: Spin-On
• Application: MerCruiser Sterndrive & Inboard Engines
• Engine Applications: Select GM and Mercury Marine Engines
• Mercury Marine Applications: 4.5L & 6.2L
• Anti-Drainback Valve: Yes
• Corrosion-Resistant Construction: Yes
• Sold individually

Recommended Oil Filter Maintenance

For compatible MerCruiser engines, change the engine oil and oil filter according to the manufacturer's recommended maintenance schedule. A common service interval is every 50 operating hours or at least once per boating season, depending on your engine and operating conditions.

Always refer to your engine owner's manual for the correct maintenance interval and oil filter specification.