Nitro-carburized heat treatment means these tools will last forever

putting it in just the right spot to run the spark plug wires clean and easy

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

1062 and 7744 used on 1947-1964 Big Twins and 45s

This black aluminum gas cap is a dome top

Linkert Intake Leak Tester - 4 Bolt Inside Diameter_1" Nitro-carburized heat treatment means theseThis 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.