An outboard engine is only as reliable as the oil running through it, and keeping that oil clean is essential for smooth performance and long-term durability. The Mercury Outboard Oil Filter (35-877761K01) 2-Pack delivers high-efficiency filtration, protecting critical engine components from harmful contaminants that can cause wear and reduce efficiency. Designed for select 75-150 HP Mercury FourStroke outboards, this filter ensures consistent lubrication and peak performance in any conditions.. Engineered for Reliable Oil Flow. Precision Filtration - Captures microscopic debris that can lead to buildup and premature engine wear, keeping oil cleaner for longer.. Anti-Drain Back Valve - Prevents dry starts by maintaining oil in the filter when the engine is shut down, ensuring smooth startups.. Corrosion-Resistant Housing - Built with a durable electroplated finish, it stands up to the harsh marine environment, including saltwater exposure.. Practical Maintenance for Peak Performance. R