Oil pump breather valve gear
Harley OE Part Num : 26331-52
Fits: 1952-55 K Model
Harley OE Part Num : 26331-56
Fits: 1956 K Model & 1957-59 Sportster
Harley OE Part Num : 26331-60
Fits: 1960-71 Sportster
Harley OE Part Num : 26331-72
Fits: 1972-76 Sportster
