The Mercury Quicksilver® 4-Stroke Outboard Engine Oil Filter brings OEM quality and marine-grade construction for reliable operation every time. Durable components outperform ordinary boat oil filters. The Mercury Quicksilver 4-Stroke Outboard Engine Oil Filter keeps your rig at peak performance. OEM quality. Marine-grade construction. Durable components. Proven craftsmanship. NOTE: This versatile outboard oil filter fits Mercury and Mariner 25hp 4-stroke carbureted engines (model year 2006 and prior). It also fits Mercury and Mariner 30hp, 3 cylinder 4-Stroke engines (model year 2005 and prior, all Mercury and Mariner 40‑60hp 4-stroke outboards (model year 1998 and newer, and all Mercury and Mariner 75‑115hp 4-stroke outboards (USA serial No. 1B366822 & prior). It even fits all Mercury and Mariner 75‑115hp 4-stroke outboards (USA serial No. 2B094996 and above) (not included).