For 1964 & later Johnson/Evinrude 2-cyl, 6-9.5 & 50-55 Hp | 3-cyl, 60 Hp | V4, 85-125 Hp | V6, 150 Hp outboards.
ID: 1.0625″ | OD: 1.3125 | W: 0.125″

also crosses with:
Sierra: 18-7117
GLM: 82150
Mallory: 9-76507