Next time you are needing to locate Top Dead Center on your hot rod's engine, let Mr. Gasket lend a hand. Our TDC indicator threads into 14mm or 18mm threaded spark plug holes. It whistles on the compression stroke and stops whistling at approximately Top Dead Center. Just a few of the many examples of when needed are, timing chain inspection or replacement, distributor installation and cylinder leak down.

Features

Whistles on the compression stroke and stops whistling at approximately Top Dead Center

Whistle is attached to hose with 14mm and 18mm spark plug threads

Can be used to locate approximate Top Dead Center for cylinder leak testing

Great for distributor installation

Handy for individual cylinder valve adjustment

Quick and easy to use