Timing Indicator #Tp102

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Part# 12-01167
MFR Model# TP102


This quality tool is supplied with an 18mm top dead center indicator for the #1 cylinder. The timing indicator attaches to most aircraft engines, equipped with propeller nose cones (spinners), by an elastic strap. They are very easy to use and are accurate to 1/2 degree.

Aluminum unit designed to speed up progress of timing magnetos to engine.

Note:Piston Stop is included


Nice quality and very fast and accurate service!

Timothy W Verified Purchase


August 16, 2022

The old flower pot gets the job done. Must have to time magnetos.

April 26, 2021

Does exactly as its supposed to do. I added a couple ounces more weight to the pointer just to make it more accurate I feel.

Cowans A
July 14, 2020

Good price and prompt service! Thank you!

Merrill S
November 1, 2014

Center nut is too tight and has to be loosened before it can be used.

Rayford B Verified Purchase


October 19, 2021

Nice tool. It is however somewhat difficult to rotate the scale resetting it to zero. One needs to loose the central screw but not too much so that the disc does not start to rotate by itself.

Dmitry K
July 28, 2020

These timing indicators are adequate for the job, but a bit pricey for what they are and how they are made.

October 18, 2019

Originally ordered an E25 indicator but it was out of stock, so I ordered this higher priced timing indicator instead. It turned out to be a very poor design and obviously lacked quality control. The calibrated face was fastened so tight it would not rotate. The pointer and pendulum are plastic and do not have enough weight to get consistent readings. The threads on the piston stop were cut poorly and would not screw freely or fully into the spark plug hole. There was one flimsy rubber band supplied with the unit. The are not enough mounting tabs to hold it onto a 3 blade prop spinner. Had to pay $15 postage to return the item for a refund. A big and costly disappointment!

Dennis L
September 25, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does the TP102 timing indicator come with elastic straps to hold it onto the spinner?

Yes, the straps are included.

Q: Does it have a connection for a 3 blade prop?

This attaches the nose cone or spinner with elastic bands, it will work with a 3 blade prop.

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