TwinPower
Twin Power 70-E79 FL FX 71-79 XL Advance Unit Screw Replaces H-D 3570
Regular price
$28.99
Regular price
Sale price
$28.99
Twin Power™ advance unit screw precisely replaces H-D 3570, securing the timer assembly for accurate ignition timing on 1970-early 1979 FL/FX Big Twins and 1971-1979 XL Sportsters.
- Direct OEM replacement ensures stable advance mechanism operation during distributor service
- High-quality steel construction resists vibration and wear in Shovelhead-era engines
- Essential hardware for complete ignition rebuilds or points conversions
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1971-1979 | Harley-Davidson | FLH Electra Glide | Base |
| 1971-1978 | Harley-Davidson | FX Super Glide | Base |
| 1974-1979 | Harley-Davidson | FXE Super Glide | Base |
| 1979 | Harley-Davidson | FXEF Fat Bob | Base |
| 1977-1979 | Harley-Davidson | FXS Low Rider | Base |
| 1971-1979 | Harley-Davidson | XLCH | Base |
| 1977-1978 | Harley-Davidson | XLCR Cafe Racer | Base |
| 1978-1979 | Harley-Davidson | XLS Roadster | Base |
| 1977-1978 | Harley-Davidson | XLT | Base |