For 1984 & earlier Mercury/Mariner 2-cyl, 35-60 Hp | 3-cyl, 50-70 Hp | 4-cyl, 45-80 Hp | 6-cyl, 60-115 Hp | V6, 140-200 Hp outboards. 3-Wire, ring terminals, with reservoir.

also crosses with:
Sierra: 18-6763
API Marine: PT440N
Mallory: 9-18210