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Part# 10-06754
MFR Model# TC875


This Tach Cap can be used to close off the tachometer drive of a Lycoming or Continental engine when an electronic tach drive is being used off the magneto or electronic ignition. 7/8" thread and Viton (R) O-ring to seal.


  • Machined from Aluminium L168
  • Chromic Annodised for greater protection
  • Viton O-ring included
  • Sutiable to plug the tacho drive fitting on a lycoming engine if an electronic tacho drive is used.


High quality component from Andair.

Ron G
March 26, 2021

Fit perfectly on my O-200-A tach and was able to be safety wire. However, this part is extremely overpriced ($32.50 as of the day I bought it).

Jacob B
March 25, 2021

Clean, safe solution.

William R
January 22, 2021

Fit a Continental IO-520 perfectly.

John T
January 19, 2021

Fits perfectly. Worth the wait.

Dan H
September 24, 2020

Fits perfect for my Lyoming IO-360 B1F

Schaerer C
July 17, 2020

Very nice piece. It seems pricy, but you have to consider its a low volume production...

David V
April 6, 2020

Waaay too expensive. I think youre taking advantage of being one of the few people who carry this item.

Thomas N
December 21, 2019

Great cap, easy to install and lots of holes for safety wire.

Daniel L
March 25, 2019

We installed an Electronics International tachometer in a plane that we are rebuilding. We wanted to be certain that dirt couldnt enter through the now unused flex-cable drive so we ordered one of these caps. It is beautifully made and fits great. The only surprise was that EI provides a cap for this purpose. It isnt nearly as nice but would have done the job.

Terry M
February 11, 2019


Q: will this also work for an IO470 Continental engine?

The threadings for the tachometer cap will fit the IO470 Continental engine.

Q: Is this tachometer cap aluminum or plastic?

It is aluminum.

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