BASE GASKET Fits:
TOHATSU: 40HP-50HP
MERCURY: 40HP-50HP LIGHTNING INTERNATIONAL (3cyl) (Serial number 0N000001 & UP)
Replaces:
Mercury: 812939021, 812939024, 812939016, 8129397,
Tohatsu: 3c8-01303-0, 3c8013030, 3c8-01303-4, 3c8-013032, 3c8-01303-3, 3c8-01303-1