Flathead Power offers cast and billet gearcovers for most generator style OHV big twin engines from 1936 to 1969. Some S&S gearcover kits will fit both S&S and stock crankcases, while others fit S&S crankcases only or stock crankcases only (see the chart). Most kits include both 1/4"-24 and 1/4"-20 mounting hardware. Cast gearcovers have a very stock appearance, but billet gearcovers are for custom applications where stock appearance is not desired.
- Available for stock and S&S crankcases
Features and Benefits
- Billet gearcovers – for custom applications
- Bushings installed and sized – ready to install
- Polished Finish
| Billet Generator Gearcovers -from Flathead Power® by S&S® |
| Part Number |
Application |
Hardware Type |
Pinion Bushing I.D. |
| 31-0347 |
1936-‘53 OHV with stock cases |
1/4"-24 and 1/4"-20 |
11⁄16" |
| 31-0351 |
1954-’62 & 1966-'69 with stock cases* 1936-’69 OHV with S&S cases |
1/4"-24 and 1/4"-20 |
9⁄16" |
| * No provision for stock outside oilers on 1963-’65 engines. Billet generator gearcovers come with socket head hardware. |
