Bosch VE Injection Pump Governor Spring Part Numbers by RPM:
2800 RPM 1-464-650-386
3200 RPM 1-464-650-366
3800 RPM 1-464-650-374
4200 RPM 1-464-650-354
Current part numbers used in December 2009. Numbers may have been superseded. Use at your own risk. Confirm desired RPM defueling part number before ordering. Please post any corrections or updated numbers to this thread.