Mercury 866340K01 Mercruiser Oil Filter

Mercury 35-866340K01 Mercruiser Oil Filter

Protect your engine with the Mercury-Mercruiser 35-866340K01 oil filter: an OEM-grade component. Its advanced filtration captures particles as small as 1/1000th of an inch, keeping oil clean and flowing freely. Designed to match Mercury-Mercruiser specs, it maintains proper oil pressure while reducing wear on critical engine parts. Ideal for routine maintenance, this high-efficiency filter helps extend engine life and supports smoother operation in marine conditions. Whether you're prepping for the season or doing regular upkeep, it’s a must-have for anyone serious about preserving their engine's health.

Application

• Fits all MCM/MIE GM engines, except V-6 models that have the oil filter mounted on the engine block
• Mercruiser In-Line 4- & 6- Cylinder Engines
• Mercruiser GM V8 Engines
• Mercruiser V6 & V8 Engines w/ Remote Oil Filter
• Fits 4.5L and 6.2L Mercury engine

Interchangeable
Sierra

• 18-7824-2
• 18-7876-1

Mercury Oil Filter Installation Instructions

1. Unscrew old filter and clean mounting base. Be sure old gasket is removed from mounting base
2. Apply a thin coat of oil to filter gasket. Make sure the gasket is seated properly in base of the filter
3. Screw on until the gasket contacts the base. Tighten 1 - 1-1/4 turn
4. Use an acceptable filter wrench if necessary. Do NOT exceed 1 - 1-1/4 turn
5. Refill crank case and run the engine while checking for leaks
6. Check oil level

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