For 1973-85 2.5-3.0L, 120-140 Hp | 3.8L, 6-cyl, 165 Hp | 4.3 L V6, 150-155 Hp | 5.0-7.0L 170-260 Hp Stringer sterndrive engines.

also crosses with:
Sierra: 18-7401-9
GLM: 81440
Mallory: 9-76652