Oil Pump Drive Gears

Oil pump breather valve gear 

Harley OE Part Num : 26318-37
Fits: 1957-76 Sportster

Harley OE Part Num : 26318-75
Fits: 1977-87 Sportster

Harley OE Part Num : 26318-88A
Fits: 1988-2022 Sportster