504140 Slow jet for Keihin butterfly carb. 75
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Specifications
- Brand
- MCS
- Part Number
- 504140
- OEM Reference
- 27323-78
- Pack Quantity
- Each
- Category
- Jets
- VAT Rate
- 20%
About This Product
MCS size 75 slow jet for Keihin butterfly carburettors. It fits 1976-1989 Big Twin and 1976-1987 XL Sportster models. It replaces OEM part 27323-78. This is the richest standard slow jet size. It delivers more fuel at idle and low throttle. Use it when you have performance mods such as free-flowing exhaust or air cleaner upgrades that lean out the low-speed mixture. Fit it and adjust your idle mixture.
Manufacturer part number: 504140.
Fitment
64 models76-89 Big Twin; 76-87 XL Sportster. With Keihin butterfly carburetor
FL Shovel 18 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1978–1982 | Electra Glide FLH |
| Harley-Davidson | 1978 | Electra Glide FLH 80 FLH-80 |
| Harley-Davidson | 1976–1980 | Electra Glide FLH-1200 |
| Harley-Davidson | 1980 | Electra Glide FLH-80 |
| Harley-Davidson | 1981 | Electra Glide FLHS |
| Harley-Davidson | 1977 | Electra Glide FLHS-1200 |
| Harley-Davidson | 1983 | Electra Glide FLHT |
| Harley-Davidson | 1980 | Glide Classic FLHC-80 |
| Harley-Davidson | 1983–1984 | Glide Classic FLHT |
| Harley-Davidson | 1983 | Police FLH |
| Harley-Davidson | 1979 | Police FLH-1200 FLH-1200 |
| Harley-Davidson | 1979 | Touring Electra Glide Classic FLHC-80 |
| Harley-Davidson | 1984 | Touring Electra Glide Classic FLHTC |
| Harley-Davidson | 1979 | Touring Electra Glide FLH-80 |
| Harley-Davidson | 1981–1984 | Touring Electra Glide Sport FLHS |
| Harley-Davidson | 1977 | Touring Electra Glide Sport FLHS-1200 |
| Harley-Davidson | 1980 | Touring Electra Glide Sport FLHS-80 |
| Harley-Davidson | 1983 | Touring Electra Glide Standard FLHT |
FX Shovel 11 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1983–1984 | FX Low Rider FXSB |
| Harley-Davidson | 1981 | FX Super Glide FXE |
| Harley-Davidson | 1976–1978 | FX Super Glide FXE-1200 |
| Harley-Davidson | 1982 | FX Super Glide FXS |
| Harley-Davidson | 1977–1979 | FX Super Glide FXS-1200 |
| Harley-Davidson | 1979–1980 | FX Super Glide FXS-80 |
| Harley-Davidson | 1979 | FX Super Glide Fat Bob FXEF-1200 |
| Harley-Davidson | 1979–1980 | FX Super Glide Fat Bob FXEF-80 |
| Harley-Davidson | 1981–1984 | FX Wide Glide FXWG |
| Harley-Davidson | 1976–1978 | Super Glide 1200 FX-1200 |
| Harley-Davidson | 1981–1982 | Super Glide B80 FXB |
FXR 9 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1989 | FXR Convertible FXRS |
| Harley-Davidson | 1985–1987 | FXR Custom FXRC |
| Harley-Davidson | 1982–1989 | FXR Low Glide FXRS |
| Harley-Davidson | 1988–1989 | FXR Low Rider FXLR |
| Harley-Davidson | 1986–1989 | FXR Sport FXRS-SP |
| Harley-Davidson | 1983–1988 | FXR Super Glide FXR |
| Harley-Davidson | 1986 | FXR Touring FXRD |
| Harley-Davidson | 1983–1989 | FXR Touring FXRT |
| Harley-Davidson | 1984–1989 | Police Low Rider FXRP |
Softail 8 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1983 | Dyna Glide Glide Custom FXDG |
| Harley-Davidson | 1985 | FX Super Glide Fat Bob FXEF |
| Harley-Davidson | 1985–1986 | FX Wide Glide FXWG |
| Harley-Davidson | 1987–1989 | Softail Custom FXSTC |
| Harley-Davidson | 1988–1989 | Softail Heritage Classic FLSTC |
| Harley-Davidson | 1986–1989 | Softail Heritage FLST |
| Harley-Davidson | 1989 | Softail Springer FXSTS |
| Harley-Davidson | 1984–1988 | Softail Standard FXST |
Sportster 11 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1977–1978 | Sportster 1000 XLCH-1000 |
| Harley-Davidson | 1981–1985 | Sportster 1000 XLH |
| Harley-Davidson | 1980 | Sportster 1000 XLH-1000 |
| Harley-Davidson | 1979–1980 | Sportster 1000 XLS-1000 |
| Harley-Davidson | 1977 | Sportster 1000 XLT-1000 |
| Harley-Davidson | 1986–1987 | Sportster 1100 XLH |
| Harley-Davidson | 1987 | Sportster 883 XL883 |
| Harley-Davidson | 1981–1984 | Sportster Roadster 1000 XLS |
| Harley-Davidson | 1983–1985 | Sportster Roadster 1000 XLX |
| Harley-Davidson | 1980 | Sportster Standard XLH |
| Harley-Davidson | 1976–1978 | Sportster Standard XLH-1000 |
Touring 7 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1981 | Glide Classic FLTC |
| Harley-Davidson | 1984 | Tour Glide Classic FLT |
| Harley-Davidson | 1981–1984 | Tour Glide FLT |
| Harley-Davidson | 1985–1988 | Touring Electra Glide Classic FLHTC |
| Harley-Davidson | 1987–1989 | Touring Electra Glide Sport FLHS |
| Harley-Davidson | 1981–1987 | Touring Tour Glide Classic FLTC |
| Harley-Davidson | 1980–1983 | Touring Tour Glide FLT |
Planning other changes? Find your model in the bike customiser.
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