Part Number: 86281

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EGT PROBE MODEL A CLAMP TYPE K

Product Details

Alcor EGT and TIT Thermocouple Probes
Alcor EGT probes are accurate +/- 25 deg at 1500 deg F. Includes fire sleeve and ring terminal hardware.

 

Screw-In Mount:
This option provides the neatest installation. Many engines now come with a hole already threaded for a screw-in probe. If not, threaded weld boss P/N 28113 can be purchased to retrofit an engine. Alcor screw-in probes are available in 7/16"-20 UNF thread common in Continentals or 1/4"-18 NPT common in Lycomings. Some probes are available with adjustable depth to accommodate different weld boss heights. The probe tip should be 3/4" into the tube. Screw-in probes are also available with a 90 deg bend or an 8 deg bend to allow for an engine design that will not accommodate the straight-in type.

 

P/N 

Description 

Thermocouple Type 

Mount 

Grounded or Ungrounded 

Stagger 

Resistance 

86143 * 

EGT/TIT Probe 

K - Red and Yellow 

Screw-in, 1/4" NPT 

Grounded 

Normal 

0.89 +/- .10 Ohms 

86160 ** 

EGT/TIT Probe 

K - Red and Yellow 

Screw-in, 7/16"-20

Grounded 

Reverse 

0.70 +/- .10 Ohms 

86161 * 

EGT/TIT Probe, 90 deg bend 

K - Red and Yellow

Screw-in, 1/4" NPT 

Grounded 

Reverse 

0.70 +/- .10 Ohms 

86230 * 

EGT/TIT Probe, 8 deg bend 

K - Red and Yellow

Screw-in, 1/4" NPT 

Grounded 

Normal 

0.89 +/- .10 Ohms 

86240 

EGT/TIT Probe 

K - Red and Yellow

Screw-in, 7/16"-20 

Grounded 

Normal 

0.80 +/- .10 Ohms 

86245 ** 

EGT/TIT Probe, 11.56" 

K - Red and Yellow

Screw-in, 7/16"-20 

Grounded 

Reverse 

0.70 +/- .10 Ohms 

86307 *** 

EGT/TIT Probe 

K - Red and Yellow

Screw-in, 1/4" NPT 

Ungrounded 

Normal 

0.71 +/- .03 Ohms 

86308 *** 

EGT/TIT Probe 

K - Red and Yellow 

Screw-in, 7/16"-20 

Ungrounded 

Normal 

0.71 +/- .03 Ohms 

86309 ** 

EGT/TIT Probe, Long Lead 

K - Red and Yellow 

Screw-in, 7/16"-20 

Ungrounded 

Normal 

1.60 Ohms 

86341 * 

EGT/TIT Probe 

K - Red and Yellow 

Screw-in, 1/8" NPT 

Ungrounded 

N/A 

0.94 +/- .10 Ohms 

* Adjustable depth tip
** Built in radiator
*** Adjustable depth tip and built in radiator 

 

 

Clamp Mount:
The is the most common option because installation is easy and no welding is required. A hole is simply drilled in the exhaust near the mounting flange. The probe is inserted in the hole and a hose-clamp style clamp secures it in place. Clamps are available in various sizes to accommodate different sized exhaust tubes.

 

P/N 

Description 

Thermocouple Type 

Mount 

Grounded or Ungrounded 

Stagger 

Resistance 

86226 * 

EGT/TIT Probe 

K - Red and Yellow 

Clamp, 3 1/4" Max 

Grounded 

Reverse 

0.70 +/- .10 Ohms 

86255 * 

EGT/TIT Probe 

K - Red and Yellow 

Clamp, 1 1/8" to 3 3/8" 

Grounded 

Normal 

0.80 +/- .10 Ohms 

86275 * 

EGT/TIT Probe, 13.8" 

K - Red and Yellow 

Clamp, 3 1/4" Max 

Grounded 

Normal 

0.80 +/- .10 Ohms 

86281 * 

EGT/TIT Probe 

K - Red and Yellow 

Clamp, 3 1/4" Max 

Grounded 

Normal 

0.85 +/- .10 Ohms 

86310 * 

EGT/TIT Probe 

K - Red and Yellow 

Clamp, 2.35" Max 

Ungrounded 

Normal 

1.60 Ohms 

86343 ** 

EGT/TIT Probe 

K - Red and Yellow 

Clamp, 3 1/4" Max 

Ungrounded 

Normal 

0.80 Ohms 

* Built in radiator
** Omega style male plug connector. Does not include fire sleeve. 

For more information on probes, go to Thermocouple Probes.

 

 

 

ALCOR Instruments and Probes

Don't waste your money on cheap instruments and probes. There is a big difference!

 

Increase engine life and enhance safety through proper monitoring

  • Faster responding probes than low dollar alternatives
  • Temperature compensated gauges for accuracy all year round at any altitude
  • Single gauges monitor one cylinder, dual gauges for twin engine aircraft monitor one cylinder per engine. Add a selector switch to make an economical full engine analyzer. Lighted gauges and custom dials also available!

 

Alcor: A name you can trust

  • Over 50 years experience - Designed, manufactured and supported in the USA
  • Generous warranty: 3 years for gauges, 5 years for grounded probes, 1 year for ungrounded probes
  • FAA-PMA/STC approved for all aircraft with reciprocating engines

 

Simple installation

  • No power required from the aircraft (lighted gauges require power)
  • Works even with an electrical failure
  • Great for homebuilt or antique aircraft with no electrical system
  • Gauges include all mounting hardware
  • Standard 2 1/4" or 3 1/8" gauge sizes

 

Save with complete kits!

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Supersedures

OEM Part Number McFarlane Part Number Comment
86225 86281
86246 86281
86313 86281
C9910246-6 86281
MCI-A106-A44S2 86281

Eligible Aircraft

Make Series Model Beginning S/N Ending S/N Quantity Per Aircraft Location Comment Eligibility Chart
Many Many Many 0 ZZZZZZZZZZZZZZZ