Mercury/Mariner, 40-50HP (4-Cyl), 50-70HP (3-Cyl), 10 tooth, , Mercury, 50-44369, 50-44369A1, 50-60315, 50-65436, 50-73521, 50-73521T, 50-898265005, 50-898265012, , API Marine: MOT3007N, ARCO: 5379, Mallory: 9-15025 9-15026, MES: S2033M S2037M, Sierra: 18-5605