31-6203 Billet oil pump. 73-91 style
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Specifications
- Brand
- S&S
- Part Number
- 31-6203
- OEM Reference
- —
- Pack Quantity
- Sold as kit
- Category
- Oil Pumps
- VAT Rate
- 20%
About This Product
This S&S billet oil pump kit is a high-quality replacement for 1973 to 1991 Big Twin models. CNC-machined to exacting tolerances, it provides much more consistent oil pressure than a stock cast unit. The design includes an oil pressure regulation bypass that routes excess oil back to the supply side, which helps prevent oil foaming and cavitation. While it offers several options for oil line placement, it is not equipped for rear chain oiling. The kit comes complete with mounting instructions and everything needed for the swap. Be aware that some crankcase variations may require minor drilling or plugging; using the S&S drill jig (MCS 518150) is highly recommended for a perfect fit.
Manufacturer part number: 31-6203.
Fitment
77 models73-91 Big Twin
Dyna 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1991 | Dyna Sturgis FXDB |
Electra Glide 14 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1978 | Electra Glide FLH 80 FLH-80 |
| Harley-Davidson | 1975–1980 | Electra Glide FLH-1200 |
| Harley-Davidson | 1979–1980 | Electra Glide FLH-80 |
| Harley-Davidson | 1975 | Electra Glide FLHF |
| Harley-Davidson | 1977 | Electra Glide FLHS-1200 |
| Harley-Davidson | 1980 | Electra Glide FLHS-80 |
| Harley-Davidson | 1984 | FLH Police 80 FLH |
| Harley-Davidson | 1979–1980 | Glide Classic FLHC-80 |
| Harley-Davidson | 1983 | Police FLH |
| Harley-Davidson | 1979–1980 | Police FLH-1200 FLH-1200 |
| Harley-Davidson | 1979 | Touring Electra Glide Classic FLHC-80 |
| Harley-Davidson | 1978–1980 | Touring Electra Glide FLH-80 |
| Harley-Davidson | 1977 | Touring Electra Glide Sport FLHS-1200 |
| Harley-Davidson | 1980 | Touring Electra Glide Sport FLHS-80 |
FXR 15 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1989–1990 | FXR Convertible FXRS |
| Harley-Davidson | 1985–1987 | FXR Custom FXRC |
| Harley-Davidson | 1982–1990 | FXR Low Glide FXRS |
| Harley-Davidson | 1988–1990 | FXR Low Rider FXLR |
| Harley-Davidson | 1986–1991 | FXR Sport FXRS-SP |
| Harley-Davidson | 1982–1990 | FXR Super Glide FXR |
| Harley-Davidson | 1986 | FXR Touring FXRD |
| Harley-Davidson | 1984 | FXR Touring FXRDG |
| Harley-Davidson | 1983–1990 | FXR Touring FXRT |
| Harley-Davidson | 1991 | Low Rider Convertible FXRS |
| Harley-Davidson | 1991 | Low Rider Custom FXLR |
| Harley-Davidson | 1991 | Low Rider FXRS |
| Harley-Davidson | 1991 | Low Rider Sport Edition FXRS-SP |
| Harley-Davidson | 1991 | Sport Glide FXRT |
| Harley-Davidson | 1991 | Super Glide FXR |
FXR Police 3 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1984–1990 | Police Low Rider FXRP |
| Harley-Davidson | 1991 | Super Glide Police (Fairing) FXRP |
| Harley-Davidson | 1991 | Super Glide Police (Windshield) FXRP |
Low Rider 2 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1977–1979 | FX Super Glide FXS-1200 |
| Harley-Davidson | 1979–1980 | FX Super Glide FXS-80 |
Police 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1975 | Glide Police FL |
Police Electra Glide 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1979–1980 | Police FLH 80 FLHP-80 |
Softail 15 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1983 | Dyna Glide Glide Custom FXDG |
| Harley-Davidson | 1991 | Fat Boy FLSTF |
| Harley-Davidson | 1983–1985 | FX Low Rider FXSB |
| Harley-Davidson | 1981–1985 | FX Super Glide Fat Bob FXEF |
| Harley-Davidson | 1981–1984 | FX Super Glide FXE |
| Harley-Davidson | 1981–1986 | FX Wide Glide FXWG |
| Harley-Davidson | 1991 | Heritage Softail Classic FLSTC |
| Harley-Davidson | 1987–1991 | Softail Custom FXSTC |
| Harley-Davidson | 1990 | Softail Fat Boy FLSTF |
| Harley-Davidson | 1988–1990 | Softail Heritage Classic FLSTC |
| Harley-Davidson | 1986–1990 | Softail Heritage FLST |
| Harley-Davidson | 1988–1990 | Softail Springer FXSTS |
| Harley-Davidson | 1984–1990 | Softail Standard FXST |
| Harley-Davidson | 1991 | Springer Softail FXSTS |
| Harley-Davidson | 1981–1982 | Super Glide B80 FXB |
Super Glide 4 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1979–1980 | FX Super Glide Fat Bob FXEF-1200 |
| Harley-Davidson | 1979–1980 | FX Super Glide Fat Bob FXEF-80 |
| Harley-Davidson | 1976–1979 | FX Super Glide FXE-1200 |
| Harley-Davidson | 1976–1978 | Super Glide 1200 FX-1200 |
Tour Glide 3 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1979–1980 | Tour Glide FLT |
| Harley-Davidson | 1980 | Touring Tour Glide FLT |
| Harley-Davidson | 1983 | Touring Tour Glide FLTD |
Touring 17 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1991 | Electra Glide Classic FLHTC |
| Harley-Davidson | 1981–1983 | Electra Glide FLH |
| Harley-Davidson | 1981 | Electra Glide FLHS |
| Harley-Davidson | 1983–1984 | Electra Glide FLHT |
| Harley-Davidson | 1983–1984 | Glide Classic FLHT |
| Harley-Davidson | 1981 | Glide Classic FLTC |
| Harley-Davidson | 1982–1984 | Tour Glide Classic FLT |
| Harley-Davidson | 1981–1984 | Tour Glide FLT |
| Harley-Davidson | 1991 | Tour Glide Ultra Classic FLTCU |
| Harley-Davidson | 1983–1990 | Touring Electra Glide Classic FLHTC |
| Harley-Davidson | 1984 | Touring Electra Glide FLH |
| Harley-Davidson | 1981–1990 | Touring Electra Glide Sport FLHS |
| Harley-Davidson | 1983–1988 | Touring Electra Glide Standard FLHT |
| Harley-Davidson | 1980–1990 | Touring Tour Glide Classic FLTC |
| Harley-Davidson | 1989–1990 | Touring Tour Glide Classic Ultra FLTCU |
| Harley-Davidson | 1981–1983 | Touring Tour Glide FLT |
| Harley-Davidson | 1991 | Ultra Classic FLHTCU |
74CI (1200CC) OHV Twin 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1978 | Electra Glide FLH |
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