- -44%New Starter Replacement For 1988-2004 Mariner Mercury Optimax EFI 75-125HP 50660151, 50-66015-3, 50-66015T50-66015T1, 50-893892, 4886540M030SM, SM48865, SAB0079, 41021051Special Price $71.08 Original Price $127.94 Save:$56.86(-44% OFF)Save $56.86(-44%)