Mercury-Mercruiser 35-866340K01 Oil Filter This OEM oil filter is constructed with a high-efficiency design that allows for the constant flow of oil to vital engine areas. The unique filtration system screens particles smaller than 11000th of an inch from your oil keeping it cleaner longer. It is recommended that you change your fuel filter after every 100 hours of normal use or minimally once per season. Application Information Fits all MCMMIE GM engines, except V-6 models that have the oil fil