- The S&S crankcase oil passage drilling jig is used to perform crankcase drilling modifications when installing an S&S oil pump assembly on early big twin crankcases
- Made of hardened steel for durability, this fixture enables the builder to do four modifications
- Primary chain oil supply passage from the breather valve gear cavity to the back side of the oil pump body on late generator and early alternator crankcases
- Pressure relief passage from behind the main oil pressure valve to the gear cavity on alternator crankcases
- Crankshaft and main bearings supply passage on generator crankcases
- Crankshaft and main bearings supply passage on early alternator crankcases
- For 1953-1980 Big Twins
- Made in the U.S.A.
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1958-1964 | Harley-Davidson | Duo Glide FL | |
| 1958-1964 | Harley-Davidson | Duo Glide FLF | |
| 1958-1964 | Harley-Davidson | Duo Glide FLH | |
| 1958-1964 | Harley-Davidson | Duo Glide FLHF | |
| 1979-1980 | Harley-Davidson | Electra Glide Classic FLHC | |
| 1965-1969 | Harley-Davidson | Electra Glide FLFB | |
| 1970-1980 | Harley-Davidson | Electra Glide FLH | |
| 1965-1969 | Harley-Davidson | Electra Glide FLHB | |
| 1970-1972 | Harley-Davidson | Electra Glide FLHF | |
| 1965-1969 | Harley-Davidson | Electra Glide FLHFB | |
| 1980 | Harley-Davidson | Electra Glide Sport FLHS | |
| 1979-1980 | Harley-Davidson | Fat Bob FXEF | |
| 1953-1957 | Harley-Davidson | Hydra Glide FL | |
| 1953-1957 | Harley-Davidson | Hydra Glide FLF | |
| 1955-1957 | Harley-Davidson | Hydra Glide FLH | |
| 1955-1957 | Harley-Davidson | Hydra Glide FLHF | |
| 1977-1980 | Harley-Davidson | Low Rider FXS | |
| 1980 | Harley-Davidson | Sturgis FXB | |
| 1974-1980 | Harley-Davidson | Super Glide Electric Start FXE | |
| 1971-1978 | Harley-Davidson | Super Glide FX | |
| 1980 | Harley-Davidson | Wide Glide FXWG | |