A powerful engine demands clean, uninterrupted oil flow—especially when it’s pushing through the chop or running at peak RPMs. The Mercury MerCruiser Oil Filter (35-866340K01) is built to handle the high demands of MerCruiser sterndrive and inboard engines, keeping oil free from harmful contaminants while ensuring smooth, reliable performance. Designed for GM-based MerCruiser V8s, inline 4- and 6-cylinder models, and select V6 configurations, this filter is engineered to extend engine life and maintain optimal efficiency.

Built for Performance and Durability

• M-Pleated Filtration – Traps microscopic debris to keep oil cleaner for longer, reducing wear on critical engine components.
• Anti-Drain Back Valve – Keeps oil in place when the engine is off, ensuring instant lubrication at startup and preventing dry starts.
• Corrosion-Resistant Housing – Electroplated for durability in saltwater and freshwater environments, extending filter longevity.

Why It Matters

Engines work hard, and quality filtration is what keeps them running longer and stronger. Regularly replacing the oil filter—ideally every 100 hours or once per season—protects against sludge buildup and premature wear. Whether cruising, towing, or wide-open throttling, a dependable filter like this ensures the engine stays in peak condition, ready for whatever the water throws its way.