Size: 1/4 inside diameter x 1 inch length

Nickel plated screws OEM# 3529-10

and it will help you find Top Dead Center (TDC) and assist in ignition timing

T160) and BSA twins (A50

This is far superior to other Frisco Sportster style gas tanks that have a petcock bung on the flat bottom of the gas tank

Dished Screw-In Gas Cap for Harley-Davidson 1996 & later - Aluminum Subcategory_Cylinders Pistons & Rings Size: 1/4 inside diameter xLowbrow Customs dished gas caps are precision machined out of solid aluminum and paired with an injection molded base and gasket that fit 1996 & later Harley Davidson motorcycles as well as most aftermarket gas tanks. These gas caps are slightly smaller diameter than a stock cap for that custom look and feature a knurled band for easy tightening and removal, with or without your gloves on. 2 1 2 inch diameter, vented. Made in the USA.