These cast aluminum Spinner Caps by Mooneyes are a perfect fit in the Moon tanks

Your standard or metric tools will never fit right and will round out your bolt heads

These may not be compatible with electronic ignitions that require resistor caps

vented cap

Complete Rocker Cover Gasket Kit - 1991-2003 Harley-Davidson Sportster Subcategory_Intake Components These cast aluminum Spinner CapsComplete Gasket Kit, Rocker Cover, with Metal Rocker Base Gaskets, 1991 2003, Sportster James Gaskets are known world wide for their close attention to quality and fit. Made in the USA. For complete fitment see Additional Information below.