Set your custom gas or oil tank apart with this Cast Aluminum Spinner push-in style Oil Cap! These caps are investment-cast in aluminum, and includes O-ring for a secure, leak-free seal. This replacement push-in style oil filler cap fits most Harley-Davidson Sportster and Big Twins as well as most custom oil tanks with side-fillers. Plug measures 1-1/4″ (not including O-rings) Sold Individually.
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