Mercury Outboard Oil Filter 30 40 50 60 EFI SEA PRO 3-Cylinder 4-Cylinder 35-8M0162829 Supersedes 35-8M0065104 - 12 Pack. A well-maintained outboard engine isn't just about smooth performance-it's about longevity, reliability, and keeping every trip on the water worry-free. The Mercury Outboard Oil Filter (35-8M0162829) 12-Pack is built for those who demand consistent, high-quality filtration to protect their engine from harmful contaminants. Designed for a range of Mercury and Mariner FourStroke outboards, this filter keeps oil flowing clean, reducing wear and ensuring optimal lubrication for every run.. Built for Lasting Performance. Precision Filtration - Traps even the smallest debris, preventing sludge buildup and maintaining oil integrity over time.. Anti-Drain Back Valve - Retains oil in the filter after shutdown, preventing dry starts and ensuring instant lubrication on startup.. Heavy-Duty Construction - Corrosion-resistant electroplated housing stands up to the harshest saltw