4 Micron, water separating spin-on as a direct cross for Mercury Marine part numbers: 35-1604941, 35-60494, 35-802893Q, 35-802893Q1, 35-802893T, 35-805269, 35-807172, 9-37801, C35-60494A / NAPA: 3225, 3226 / Sierra: 187845, 18-7845, 18-7945 / WIX: 33225, 33226 / Fram: PS3808