with a surface build up of

Reproduction of OEM# 56410-53 plugs used on 1954-74 Harley-Davidson Big Twins

Nitro-carburized heat treatment means these tools will last forever

Chrome plated reproduction of OEM# 3960

Custom shape fork stem bolt with chrome plated washer replaces OEM# 4453 bolt and cover on 1986-up FLST

Linkert Intake Leak Tester - 4 Bolt Inside Diameter_1" with a surface build upThis tool from Unity Manufacturing makes testing your intake tract a breeze. Simply bolt this to your intake manifold, make sure your intake valves are closed, and use a bicycle tire pump or air compressor regulated down to 10 psi. Spray the intake gasket area with soapy water and look for the bubbles. Readjust your clamps and repeat until you dont have any leaks, then bolt your carb on and go! Made in USA.