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Part # AA86146
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 |
|
CHT Probe |
J - Black and Yellow |
Bayonet |
Grounded |
Normal |
0.24 +/- .05 Ohms |
|
|
CHT Probe |
J - Black and Yellow |
Gasket, 18mm |
Grounded |
Normal |
0.13 + .16 Ohms / - .05 Ohms |
|
|
CHT Probe |
K - Red and Yellow |
Bayonet |
Grounded |
Reverse |
0.66 +/- .10 Ohms |
|
|
CHT Probe |
K - Red and Yellow |
Bayonet, Screw-in ** |
Grounded |
Reverse |
0.65 +/- .10 Ohms |
|
| 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.
Don't waste your money on cheap instruments and probes. There is a big difference! Increase engine life and enhance safety through proper monitoring
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Simple installation
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| Make | Model | Start S/N | End S/N | Eligibility Chart |
|---|---|---|---|---|
| Cessna 310P | 310P | S/N 310P0001 – 310P0240 | 310P0240 | Eligibility Chart 6630 |
| Cessna 310Q | 310Q | S/N 310Q0001 – 310Q1160 | 310Q1160 | Eligibility Chart 6630 |
| Cessna 401 | 401 | S/N 401-0001 – 401-0322 | 401-0322 | Eligibility Chart 6630 |
| Cessna 401A | 401A | S/N 401A0001 – 401A0132 | 401A0132 | Eligibility Chart 6630 |
| Cessna 401B | 401B | S/N 401B0001 – 401B0221 | 401B0221 | Eligibility Chart 6630 |
| Cessna 402 | 402 | S/N 402-0001 – 402-0322 | 402-0322 | Eligibility Chart 6630 |
| Cessna 402A | 402A | S/N 402A0001 – 402A0129 | 402A0129 | Eligibility Chart 6630 |
| Cessna 402B | 402B | S/N 402B0001 – 402B1384 | 402B1384 | Eligibility Chart 6630 |
| Cessna 404 | 404 | S/N 404-0001 – 404-0859 | 404-0859 | Eligibility Chart 6630 |
| Piper PA-31 | PA-31 | S/N 31-2 – 31-8312019 | 31-8312019 | Eligibility Chart 6630 |
| Piper PA-31-300 | PA-31-300 | S/N 31-2 – 31-8312019 | 31-8312019 | Eligibility Chart 6630 |
| Piper PA-31-325 | PA-31-325 | S/N 31-7400990 – 31-8312019 | 31-8312019 | Eligibility Chart 6630 |
Reference only: Please verify the product is eligible for your aircraft before adding to your cart.