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Tempest At5K Resistance Tester

$159.95/Each
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Part# 08-07462
MFR Model# AT5K

Overview

High internal resistance in spark plugs is rapidly becoming a concern that many IA/AP's are beginning to recognize as the source of rough running engines and chronic magneto related problems. Since a growing number of maintenance facilities are incorporating a resistance check of all spark plugs, Tempest felt it would be beneficial to make it as easy and efficient as possible to conduct such a test.

AT5K Resistance Tester
Tempest has developed an easy-to-use tester that makes it very efficient for IA/AP's to test the resistance in all aviation spark plugs.

The IA/AP simply places the spark plug, barrel side down over the contact post and touches the other lead end to the firing end of the center electrode. If the light is green, the spark plug resistance is below 4kŮ (thousand ohms). If both the green and red lights are on, then the plug is between 4 - 5kŮ. This is acceptable for serviceable plugs. If the red light is on alone, this indicates a resistance value in excess of 5kŮ and the plug must be discarded and replaced.

   
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Reviews

Works as advertised. Quick and easy, takes seconds to check your plugs as compared to using an ohm meter.

Daniel C Verified Purchase

TEMPEST AT5K RESISTANCE TESTER

November 9, 2023

Works really well

Joe M Verified Purchase

TEMPEST AT5K RESISTANCE TESTER

July 28, 2023

Thanks for stocking the sparkplug tester. Its a good first step for my plug changing routine. Works good.

Dwayne B Verified Purchase

TEMPEST AT5K RESISTANCE TESTER

May 9, 2023

Frederick F Verified Purchase

TEMPEST AT5K RESISTANCE TESTER

October 19, 2022

Burgess A Verified Purchase

TEMPEST AT5K RESISTANCE TESTER

April 12, 2022

Some folks have complained of the price, but to me it is well worth it for the convenience and accuracy. I highly recommend having one. I rotate and test my plugs every 50 hours on my O-540. Having this tester has made checking the resistance a breeze.

William B Verified Purchase

TEMPEST AT5K RESISTANCE TESTER

November 4, 2021

👍👍👍

Sandro P Verified Purchase

TEMPEST AT5K RESISTANCE TESTER

May 30, 2021

Would prefer a built in OHM gauge on the unit, but the unit is well made and should provide years of good service. It is easy to use

Paul T
October 5, 2019

Works great, simple and quick. No reason not to check plugs when they are out when you have this great little unit. You can accomplish the same thing with an ammeter but not as quick and easy. Im happy with it, highly recommend.

Kurt
October 13, 2017

Works as described. It would be 5 stars, but it is overpriced for what you get.

West C Verified Purchase

TEMPEST AT5K RESISTANCE TESTER

June 22, 2022

Q&A

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 this Tempest AT5K resistance tester work on Champion plugs as well as Tempest?

Yes, both plugs types will work fine with this tester.

Q: Will this Tempest AT5K Resistance Tester work with both massive and fine wire plugs?

Per the supplier: Yes, it will work with both types of plugs.

Q: How is the Tempest AT5K resistance tester powered?

This is powered with a 9V battery.

Q: How long is the warranty on this tester?

90 days from date of purchase.

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