For 1973-78 Johnson/Evinrude 2-cyl, 140-150 Hp | 4-cyl, 85-135 Hp | 6-cyl, 175-235 Hp outboards.
Hub uses key 47-01408
ID: 22.3 mm | OD: 89 mm
W: 31.9 mm | 6 blades

also crosses with:
Sierra: 18-3043
GLM: 89680
Mallory: 9-45203