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Home / Instruments / EGT/CHT/TIT Gauges / Insight GEM /Gem System EGT Probe #2870
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Gem System EGT Probe #2870

18 Reviews 5 Answered Questions
$145.95/Each
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Part# 2870
MFR Model# 2870

Overview

Insight is the world's largest manufacturer of aviation temperature probes. The temperature probe measures the engine's pulse and therefore is crucial to optimum performance. Insight's probes are built and tested to the highest quality control standards to ensure long life and high performance.

The EGT probe consists of a special alloy sheath connected to a stainless steel clamp. The probe tip is installed in a small hole in the exhaust stack, secured by an adjustable clamp.
   
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Reviews

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Worked just fine. Problem solved.

Michael C Verified Purchase

Insight EGT Probe # 2870
July 24, 2025

Aircraft Spruce goes above and beyond to make sure their customers are comfortable with the part they are ordering, thanks Sam!

Michael T Verified Purchase

Insight EGT Probe # 2870
May 18, 2025

Great product. Engine monitors are great for monitoring engine performance.

Timothy B Verified Purchase

Insight EGT Probe # 2870
June 12, 2024

Install easy problem fixed

S&d F Verified Purchase

Insight EGT Probe # 2870
December 14, 2022

5 stars

Jeffrey R Verified Purchase

Insight EGT Probe # 2870
November 26, 2022

Product arrived quickly and worked as it should.

Aaron U Verified Purchase

Insight EGT Probe # 2870
October 21, 2022

Product works great

Terry O Verified Purchase

Insight EGT Probe # 2870
September 17, 2022

Product good but if you remove after a time in service They sometimes fail after reinstall

Joseph L Verified Purchase

Insight EGT Probe # 2870
March 9, 2022

Worked. Lead same length as old one being replaced.

Chuck B Verified Purchase

Insight EGT Probe # 2870
February 11, 2022

Exact fit and works pefectly

Glenn R
October 19, 2020

Q&A

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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: I am replacing a JPI probe part-number M-111-G. Will GEM EGT Probe #2870 work? I'm putting it on a PA-30 Lycoming IO320 a1b engine.

Yes, the Gem EGT probe (2870) will work with your Lycoming IO320 a1b.

Q: Is the GEM system EGT probe 2870 grounded? How can it be tested?

Yes, this is a grounded probe which can be tested with an ohm meter. The resistance between the two leads should be less than 2 ohms.

Q: What size is the clamp on the 2870 probe?

Per the manufacturer, this clamp fits 1-5/16"(inch) to 2-1/4" pipe.

Q: What is the diameter of the probe?

Probe is 1/8 inch inside the clamp.

Q: Are all 2870 probe wiring the same length?

Yes, all the 2870 probes are the same length.

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