McFarlane Aviation Products

Part Number: 86251

CHT PROBE BAYONET STYLE TYPE J

Approval	EASA-STC (European Union), FAA-PMA, FAA-STC (Modification Article)
Condition	New
Manufacturer	Alcor, Inc.
Unit of Measure	EACH
Retail Price	$143.76
Your Price	$113.49
Stock Status	In Stock

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Product Details

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

Approximately 15.0" long
Accessories: 28202 Adapter
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
AA86146	CHT Probe		Bayonet	Grounded		0.57 +/-

*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