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EVO: Oiling & Lubrication - Sub-03C
Oil Pump Upgrade Kit 26204-91A
- In addition to the upgraded Drive Gear (26391-06), there is also an upgraded entire Oil Pump (first installed on 07-later Sportsters). The new pump reuses the same kit part number as a previous version, making it difficult & confusing to know to which version someone is referring. The old (& new) part number for the kit is 26204-91A (which first showed up in model year 1998 and installed thru model year 2006).
- The difference between the 1998 version and the 2007 version relates to the drive shaft, internal Gerotor return & feed gears and the body (which cannot be ordered separately). The internal parts for the new pump design are not backward compatible to the 2000 pump design.
- The only known external indicator to identify that the 2007 pump version is currently installed is the number 26213-07 which is stamped on the bottom of the new version.
- The upgraded pump is compatible for use on 1991-later Sportsters.
Here are the internal servicing part numbers from 1998-2000 version and 2007 and up version:
Part Name | 2000 P/N | 2007 P/N |
Gear Shaft | 26488-98 | 26239-07 |
Gerotor Return Set | 26491-98 | 26502-07 |
Gerotor Feed Set | 26492-91 | 26503-07 |
Separator Plate | 26493-91 | Unknown? |
Bottom Gasket | 26495-89A | 26495-89B |