For 1965 & later 2-cyl, 10-25 Hp | 3-cyl, 19-40 Hp | 4-cyl, 42-130 Hp | 6-cyl, 141-175 Hp | V8, 225-290 Hp diesel & gasoline engines.
Spline Hub
ID: 14.29 mm | OD: 57 mm
W: 31.6 mm | 12 blades

also crosses with:
Sierra: 18-3081
GLM: 89540