S&S CYCLE Super Stock® Alternator Style Crankcase for '70-'84 Big Twins with Stock Bore - Natural - 31-0003
🚚 Estimated Delivery: 14 Jul - 21 Jul
The S&S Super Stock alternator style crankcases are perfect for stock replacement and for high performance applications. Pre-clearanced for strokes up to and including 5 inch. S&S Super Stock crankcases are compatible with stock 1970-1999 flywheel assemblies, primary covers, gearcovers, and clearanced for 38 amp alternator stators. 1970–1984 big twins. Natural finish. Available for stock, 3 5/8", and 3 13/16" bore applications.
Stock. . . .31-0003
3 5/8". . . . 31-0004
3 5/8"Bore (small diameter). . . .31-0071
3 13/16". . . .31-0030
- Cast from A356 T-6 heat-treated aluminum alloy
- Machined to accept an oil filter assembly that mounts on the front of stock motor cases
- All races are line-honed and breather cavity is precision-machined to optimize breather timing for maximum oil scavenging
- Additional parts include; crankcase bolts, washers and nuts, cylinder mounting studs, timing hole plug, magnetic drain plug, assorted breather and oil line fittings, oil pressure switch, oil screen, spring and plug, sprocket shaft Timken bearing assembly and oil seal, pinion shaft main bearing race, cam needle bearing assembly, oil pump drive shaft bushing and installation instructions
- Machined for EFI fitment
- Made in the U.S.A.
NOTES:1981–'84 style oil pump. Includes primary scavenge port machining. Machined for 1970 & later alloy primary.
Fitment Guide
| 1984 | Harley-Davidson | FLHX Electra Glide Special | - | - |
| 1983-1984 | Harley-Davidson | FXSB Low Rider - Belt | - | - |
| 1983 | Harley-Davidson | FLHTC Electra Glide Classic | - | - |
| 1983 | Harley-Davidson | FXRT Sport Glide | - | - |
| 1983 | Harley-Davidson | FXDG Disc Glide | - | - |
| 1983 | Harley-Davidson | Electra Glide Standard FLHT | - | - |
| 1982-1983 | Harley-Davidson | FXR Super Glide II | - | - |
| 1982-1983 | Harley-Davidson | Super Glide II FXRS | - | - |
| 1981-1983 | Harley-Davidson | FLTC Tour Glide Classic | - | - |
| 1981-1982 | Harley-Davidson | Electra Glide Classic FLH | - | - |
| 1981 | Harley-Davidson | FXEF Fat Bob | - | - |
| 1981 | Harley-Davidson | Electra Glide Heritage FLH | - | - |
| 1980-1984 | Harley-Davidson | FXWG Wide Glide | - | - |
| 1980-1983 | Harley-Davidson | FLT Tour Glide | - | - |
| 1980-1982 | Harley-Davidson | FXB Sturgis | - | - |
| 1980-1982 | Harley-Davidson | FLHS Electra Glide Sport | - | - |
| 1980 | Harley-Davidson | Tour Glide Classic FLTC | - | - |
| 1979-1980 | Harley-Davidson | 1200 Fat Bob FXEF | - | - |
| 1979-1980 | Harley-Davidson | Super Glide 80 FXE | - | - |
| 1979-1980 | Harley-Davidson | Fat Bob FXEF | - | - |
| 1979-1980 | Harley-Davidson | 1200 Super Glide FXE | - | - |
| 1979 | Harley-Davidson | 1200 Low Rider FXS | - | - |
| 1979 | Harley-Davidson | Electra Glide FLH | - | - |
| 1979 | Harley-Davidson | Low Rider FXS | - | - |
| 1978-1980 | Harley-Davidson | 1200 Electra Glide FLH | - | - |
| 1977-1978, 1980-1982 | Harley-Davidson | FXS Low Rider | - | - |
| 1974-1978, 1981-1984 | Harley-Davidson | FXE Super Glide | - | - |
| 1971-1978 | Harley-Davidson | FX Super Glide | - | - |
| 1970-1980 | Harley-Davidson | Electra Glide FL | - | - |
| 1970-1978, 1980-1984 | Harley-Davidson | FLH Electra Glide | - | - |
Specs
| PRODUCT NAME | ENGINE CASE |
| MODEL | SUPER STOCK |
| BASE COLOR | SILVER |
| COLOR/FINISH | RAW |
| MATERIAL | ALUMINUM |
| BORE SIZE | 3.500" |
| UNITS | KIT |
| FINISH | RAW |
| RIDING STYLE | STREET |
Delivery Info
Please Note - Warehouse Locations For This Part -
S&S CYCLE Super Stock® Alternator Style Crankcase for '70-'84 Big Twins with Stock Bore - Natural - 31-0003
Gold Coast Warehouse- If your parts are in stock at our Gold Coast warehouse at the time of order, they will be shipped within 24hrs.
Supplier Warehouse - 2-3 Week Delivery- If your parts are located at our Supplier Warehouse, Delivery ETA is approx 2-3 weeks, as the parts are likely coming from our USA supplier warehouse. We will notify you once we receive it in Gold Coast warehouse and its on its way to you.