TDC Indicator Standard 6.25″ (14mm Thread)


TDC Indicator Standard 6.25″ (14mm Thread)

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  • ipa_engine_calibration_kit_7891_15_1
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  • top-dead-center-indicator-usage

TDC Indicator Standard 6.25″ (14mm Thread)

(19 customer reviews)

Stop the guessing and easily set a piston to TDC.

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To place an order from outside of the United States, please call 888-786-7899 or email us here

Price $33.95

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Ships Within 2 Business Days


Enables a Technician to Accurately Set a Piston to Top Dead Center (TDC).

Just remove the spark plug, screw in the gauge and rotate the engine while observing the radial marks on the sliding shaft and note the top of the piston stroke.


Features and Benefits:

  • Accurately displays piston movement
  • Installs as easily as a spark plug
  • 6 1/4″ long (14 mm thread)
  • 1/8″ gradient marks
  • Made of 1144 steel alloy with a stainless steel spring






• DO NOT use on an engine that has an acute spark plug angle relative to the flat top of the piston or you may bend the TDC shafts.


19 reviews for TDC Indicator Standard 6.25″ (14mm Thread)

  1. W. Nichols

    In 50 years of working on cars, I have never had an easier way to find “top dead center”. This makes finding top dead center so easy and fast. If you want a way to save time and frustration the next time you plan on any work requiring tdc, get this.

  2. Junior

    Solid tool , works great!!! For those that are wondering if this tool will work for an LS1 5.3 it does , it worked great actually. Get yourself one it’s worth the money.

  3. Amazon Customer

    Works well with GM 5.7 Vortec. This worked very well for a 5.7 vortec.

  4. Jorge F. Rodriguez

    good accurate

  5. Pat Hedrick

    TDC tool Very well built and easy way to find top dead center.

  6. chip

    Appears good solid and well designed I haven’t been able to use it yet, but it looks like a good piece of equipment. Haven’t tested the metallurgy yet, but in the hand seems to fit the bill.

  7. Andy S

    Works Great For Finding TDC (in combination with a whistle) This 14mm tool works great for finding top dead center. I insert a whistle in the spark plug hole first to determine the compression stroke. As soon as it whistles I insert this indicator tool to find the exact top dead center. Perfect tool to prepare for a cylinder leak down test.

  8. KB

    Great tool Reasonable priced

  9. Gerald Alberda

    great way to find top dead centerll and check timing marks on damper easy to use and great dircetions

  10. Rick Bewski

    Did it’s job, good quality! Did it’s job great quality

  11. Michael R.

    Top dead center tool I love this, I work on a fleet of standby generators and am constantly performing valve adjustments in the field. It’s a God send. I know that the cylinders are exactly where they need to be for proper adjustment. The side of the slide is turned with resesed marks that can’t ware off in 1/8 inch increments (very important for compression release engines). I just wish the tube the tool came in had a cap of some sort.

  12. Jeff P.

    Would recommend this to everyone who is looking for TDC Very easy to find top dead center.

  13. chris volpe

    Perfect Worked great

  14. Amazon Customer

    Easy to use Found TDS easy

  15. larry j brendle

    Great product As indicated

  16. Juan Wong


  17. Phils2888

    Works well. Excellent quality and must have tool for engine builders.

  18. Philippe B.

    Very accurate Work good

  19. Jim

    Works as described I used this TDC indicator on my Ford 302 and it worked just fine. What I like the best about it is, there are tick marks on the spring shaft to identify when TDC is reached, very helpful.

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Materials: 1144 Steel Alloy, Stainless Steel Spring
Package Weight: .33 lbs.
Package Dimensions: 10" L x 1" W x 1" H
Warranty: Lifetime Warranty

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