Sierra's 18-7278 Fuel Pump fits GM (4 and 6 cylinder) 153, 181 250, 224, 225 Chris-Craft, Indmar, Marine Power, Mercruiser, OMC and Mercruiser MCM 120/2.5L, 140/3.0L, 470/485/488 and 160/165/200 (I/L 6 cylinder) applications. It is interchangeable with GLM 77114, Mallory 9-35419, Mercruiser Stern Drive 47585, 71327, 77594, 86234, 86234A05, 86234A3, 86234A4, and OMC Stern Drive 509395, 982240, 985602, 985603. Each Sierra product meets or exceeds the original equipment part it replaces.