Fitment: Can be used on all stock 1941-1965 Harley-Davidson E and F models (74" Knucklehead only and all Panhead) Also appropriate for any motorcycle utilizing a 4-bolt Linkert carburetor.
Intake manifold leaks cause all manner of running problems—"hanging" idle, hard- or no-start conditions, difficult tuning, and in extreme scenarios, burnt valves and pistons, and the Harley-Davidson port design left a lot to be desired. The definitive test for intake manifold leaks is by placing the manifold under pressure or vacuum. There are a number of ways to accomplish this, but this tester is probably the most painless. Simply remove your carburetor and install this test tool with the included gasket. Apply constant, regulated air pressure of 10-15 PSI from an open air chuck, and spray the manifold with leak detection fluid or plain ol' soapy water. If you've got leaks, you'll see 'em. The bubbles don't lie!
Made in USA of stainless steel.
(OEM intake manifold in image not included)