A strong, reliable engine starts with clean oil, and the Mercury MerCruiser Oil Filter (35-866340K01) 2-Pack ensures your sterndrive or inboard engine gets the protection it needs. Designed for GM-based MerCruiser and OMC engines, this oil filter effectively captures harmful debris, keeping oil flowing freely and reducing wear on critical components. With a two-pack, you're set for your next service interval or ready with a backup for when it’s needed most.

Built for Durability and Performance

• High-Efficiency Filtration – Traps microscopic particles that could cause premature engine wear, keeping oil cleaner for longer.
• Anti-Drain Back Valve – Retains oil when the engine is off, preventing dry starts and ensuring immediate lubrication upon ignition.
• Corrosion-Resistant Shell – The electroplated housing is built to withstand harsh marine environments, including saltwater exposure.

Practical Benefits

Routine oil changes are one of the easiest ways to extend engine life and maintain peak performance. This filter is designed for inline 4- and 6-cylinder models, V6 configurations with remote filters, and V8 GM-based blocks. Replacing it every 100 hours or once per season helps prevent sludge buildup and keeps oil running clean. Having a spare on hand ensures you're always ready for smooth sailing.