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
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