Part Number: 86252

CHT PROBE BAYONET STYLE TYPE K
Qty

Product Details

  • Approximately 15.0" long
  • Must be used with P/N 28202 Adapter - This allows a 1/4" turn, spring-loaded quick removal
  • This is an alternative to P/N 86253 which screwed straight in without an adapter (used in Garmin systems). P/N 86253 is no longer available.
  • Installation Instructions

 

CHT Thermocouple Probes 
Includes fire sleeve and ring terminal hardware. Two different mount styles are available:

 

Bayonet Mount
These twist and lock into a screw-in adapter. The probe is spring loaded to ensure contact with metal instead of air. Choose bayonet style if the engine model is equipped with threaded thermowell receptor and/or bayonet adapter in the cylinders.

 

Gasket Mount
These do not require a screw-in adapter. The 18mm gasket fits on many common spark plugs. Some engine designs, such as radial engines, the O-235 and O-200, may prevent the use of bayonet style or may not allow for the use of a bayonet adapter. Choose gasket style if the engine model is NOT equipped with threaded thermowell receptor and/or bayonet adapter in the cylinders. 

 

P/N

Description

Thermocouple Type

Mount

Grounded or Ungrounded

Stagger

Resistance

86251*

CHT Probe

J - Black and Yellow

Bayonet

Grounded

Normal

0.24 +/- .05 Ohms

86202

CHT Probe

J - Black and Yellow

Gasket, 18mm

Grounded

Normal

0.13 + .16 Ohms / - .05 Ohms

86252

CHT Probe

K - Red and Yellow

Bayonet

Grounded

Reverse

0.66 +/- .10 Ohms

86253

CHT Probe

K - Red and Yellow

Bayonet, Screw-in **

Grounded

Reverse

0.65 +/- .10 Ohms

86146

CHT Probe   Bayonet      

*A new installation of P/N 86251 requires P/N 28202 as well.

** Does not require bayonet adapter. Screws directly into the thermowell.

 

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!

warningWARNING: Cancer and/or Reproductive Harm - www.P65warnings.ca.gov

Eligible Aircraft

Make Series Model Beginning S/N Ending S/N Quantity Per Aircraft Location Comment Eligibility Chart
Many Many Many 0 ZZZZZZZZZZZZZZZ 6630

Related Documents

Product Catalogs and Price Lists

Current McFarlane Product Catalog

PMA Lists

Alcor, Inc. PMA Supplement 2

Maintenance and Product Guides

EGT in a Nutshell

Installation, Use, and Maintenance Instructions

Alcor CHT Probe Installation Instructions
EGT/CHT Installation Instructions

Eligibility Charts

Alcor, Inc. Vendor Eligibility Reference

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Please verify product details for suitability for your application.