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Mr. Gasket Top Dead Center Indicator

Use to locate TDC, whistles on the compression stroke


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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.


  • 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


BrandMr. Gasket
Emission Code6
Product TypeTools
WarrantyLimited 90 Day
Part Number8016MRG



Vehicle emissions regulations are not applicable to this item.

Tech Resources

Note: Not for use on diesel engines.

Warranty Information

Limited 90 Day: See Details
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