S&S oil pump drive gear for 1977 - ' 87 Harley-Davidson Sportster models. These gears can be used for stock replacement, but more importantly are required for use with S&S pinion shafts used in S&S flywheel assemblies for all 1986-'03 Sportster models. These are splined style pinion shafts, as S&S does not produce a 1988 and later stock style keyed pinion shaft. Experience has shown that the keyed design is not as strong, and that the splined pinion shafts are preferable for high performance applications. Harley-Davidson part number 26318-75. Note: All reference to H-D part numbers is for identification purposes only. We in no way are implying that any of S&S Cycle's products are original equipment parts or that they are equivalent to the corresponding H-D part number shown. S&S Part #: 33-4228

Cross-Reference: The following OEM numbers are provided for reference only and may not be completely accurate.
Harley OEM Cross Reference Numbers:
26318-75