Alcor By Tempest 2-1/4 Inch EGT Meter - Scale 1600F At 3.63 Ohm Type K

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Alcor EGT gauges are aircraft quality gauges which will provide precise monitoring of engine temperatures. PMA/FAA approved.

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WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.


  • The best value in the industry backed by a generous 3 year warranty
  • Save on fuel costs through precision leaning—running as little as 100° too rich can cost $1,000 in wasted fuel over 100 hours
  • Quick visual reference to peak EGT
  • Set reference to peak EGT where you want with easy in-flight calibration—special screwdriver included
  • No risk of malfunction during electrical failure—requires no external source of power for operation
  • Attention homebuilders—easy installation with no electrical system required
  • Designed to provide temperature compensation for accurate readings year round, on the ground and at altitude
  • All necessary mounting hardware included
  • Alcor instruments are designed, manufactured, and supported in the U.S.A.


  • Type: K - Red and Yellow
  • Size: 2-1/4" diameter
  • Resistance: Scale 1600F at 3.63 Ohm
  • Weight: 0.2 lbs
  • Single indicator calibrated for 90" lead (recalibration for other lead lengths possible)
  • Hash marks with asterisk at 4/5 scale


After installing the gauge and prior to putting everything back, I ran the engine for a test. At first the dial did not move so I thought it inoperative. Then I revved the engine past idle and it came up. I have yet to fly with due to other concerns but I feel it will be fine.

Fred H
February 9, 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 All necessary mounting hardware included mean that probes are included, too?

The Alcor 2-1/4 Inch EGT Meter does not come with any probes.

Q: What P.N Type K EGT probe goes with this gauge?

The part number 86255 would be the applicable probe for this instrument.

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