S&S cam chest breather assembly standard size measures 1.121 outer diameter.
Fits:
EL 1936-1940
FL 1941-1947
UOM: EA
Country Of Origin: USA
Accessory Items:
12-1509 – Cam Chest Breather Valve Washer Set
12-1510 – Cam Chest Breather Valve Washer Set
12-1526 – Pinion Shaft Seal Ring