42525 ALCOR EGT TYPE K 90"

Part# 42525
MFR Model# 42525
DescriptionPart Number
42525 ALCOR EGT TYPE K 90" LEAD42525


Alcor CHT/EGT gauges are aircraft quality gauges which will provide precise monitoring of engine temperatures. PMA/FAA approved.
Some of the most popular systems are shown here, and all systems are available. Request quotation on unlisted models.

Analyzer systems include instrument, all leads, switches and probes to monitor the CHT/EGT (4 Cylinders) for every cylinder.

California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


Needed the wire for my get gauge. Fit was really good

John M Verified Purchase

42525 ALCOR EGT TYPE K 90"

August 17, 2021

Well put together lead, quality workmanship.

Jeff L Verified Purchase

42525 ALCOR EGT TYPE K 90"

June 16, 2021

Everything went well.

Scott O
April 16, 2021

Kit was as advertised and everything I expected. Came with all necessary hardware and installation instructions. Alcor has their number listed on all the paper work, and I was even able to call them and have a technicals question answered- that was very nice. It’s basic- but works.

Piper D
February 4, 2021

Good product but I wanted to clarify that the install requires a very specific hole size of #30 drill bit-to hone. If you are replacing an EDI (or other non Alcor probe), and you have a hole larger than #30 drill, you will need an adapter for this.

January 27, 2021

Hi All, The item arrived much quicker than I was expecting & has been fitted, test flown & found to be working just fine. Thanks for your prompt action and supply of a good product. Regards, Steve.

Steve L
June 29, 2020

So far very happy with the purchase, installed without issue and price was reasonable.

September 3, 2019

The probe was easy to install on the exhaust. All that was needed was a screwdriver. Connect to the leads and gauge and you are done.

Fred H
January 17, 2019

The leads worked perfectly with the probe. After connecting them to the probe, they were inserted through the firewall and then to the gauge. All too easy.

Fred H
January 17, 2019

This kit was easy for my mechanic to install (onto a Piper PA28). The whole job took less than 2 hours. Works nice! Thank you.

Keith K
August 9, 2018


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: On the Alcor Basic EGT gauge 46150, how many degrees do the major and minor tick marks represent?

The large ticks are at 100 degree each starting as 1200F and the small ticks are 25 degrees each.

Q: Is this simple system compatible with a certified engine on a Cessna 150K model? And, how does the exhaust probe mount? Thanks!

This unit uses a 3 1/4 - 3 1/8 hose clamp. Please check with your local Aviation office to see if this PMA is ok for your aircraft.

Q: Whats the difference between the J and the K lead of the alcor EGT system?

Type j and type k thermocouple leads are two different alloys that react with one another based on the thermocouple effect. Each egt/cht gauge requires a certain thermocouple type to respond properly.

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