- Knuckle head series
- 8 Ribs, w/tapped hole for top end oiling, 1/4" gen mount holes
- Fit most generator motors; styled after the OEM types below
- Cast construction with a natural finish
- Include gasket and mounting hardware
- Made in the U.S.A.
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1941-1948 | Harley-Davidson | E V Twin 61 | |
| 1940-1948 | Harley-Davidson | EL V Twin 61 | |
| 1941-1948 | Harley-Davidson | F V Twin 74 | |
| 1941-1948 | Harley-Davidson | FL V Twin 74 | |