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P-102-3/8 CHT Probe – Piggy Back
FAA Approved Instrument
- FAA TSO’d, PMA’d
- Accurate and stable measurements.
- Robust construction.
- Perfected over decades of testing and field trials.
- Other models available, see below for more details.
Compatible with:
MVP-50P, CGR-30, UBG-16, EAC-1, EC-1, EC-1P, EC-2, TC-1P, C-1, C-2, C-4, C-6, CC-1P
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Product Overview
Reliable Probes

An Engine Monitor is only as good as its probes. That’s why Electronics International (EI) has taken the development of its probes, connectors, and accessories very seriously. EI has been designing and manufacturing probes for over 30 years. All of our probes have been designed in-house by our engineering team. Our team has studied, tested and designed temperature probes since the 1970′s. They have written research documents such as The Pilots Manual – Leaning and Diagnosing Engine Problems and Accurate CHT Measurements. Just as an Engine Monitor is only as good as its probes, a probe is only as good as its connector. That’s why EI’s engineering team developed EI’s proprietary OLC-2 connector. The OLC-2 connector greatly increases reliability and reduces installation errors as compared to traditional type connectors. Whether you’re looking for a reliable and accurate CHT, EGT, TIT or various other probe types, EI has what you need. With more than a half million probes sold and tested you can count on EI’s reliability.

Model |
P-102-18 |
P-102-14 |
P-102-12 |
P-102-3/8 |
Type | Gasket | Gasket | Gasket | Piggy Back |
Used With | 18 mm Sparkplug | 14 mm Sparkplug | 12 mm Sparkplug | Primary CHT Probe (or Tanis Heater) |
Max Operating Temp | 700°F | 700°F | 700°F | 700°F |
Learn More |
Learn More |
Learn More |
Learn More |
Prices
Retail Prices
Packages include:
- P-102-3/8 Piggy Back CHT Probe
- Tie Wraps 7.5″ Black HT (4)
- Fire Sleeve 5/8″
- P-102-3/8″ Important Safety Installation Information
- E.I. Wire Connections Guide
P-102-3/8 CHT Probe
-
$128

Specifications
Specifications
Type
Piggy-Back
Used With
Primary CHT Probe (or Tanis Heater)
Operating Temp Range
-80°F to 700°F Max.
Certifications
FAA, TSO’d, PMA’d
Configuration
Type K, Ungrounded
Videos
Documents
Documents & Manuals
Testimonials
Customer Testimonials
Electronics International is an exceptional company with exceptional products… Oregon company, great products and great people.
Very complete and thorough packaging. Well-prepped wiring harnesses. Quick and efficient turnaround time. Great communication throughout the process.
- Customer
- Aircraft
- EI Instrument
Excellent Service, superb product.
- Customer
- Aircraft
- EI Instrument
Very easy to install and directions were straight-forward.
- Customer
- Aircraft
- EI Instrument
A clear capable replacement for a cluster gauge. Vivid colors used which make it easy to see engine status at a glance.
- Customer
- Aircraft
- EI Instrument
Good value and functionality. I’ve used your instruments on multiple aircraft thru the years with no issues. These are a nice upgrade over the original instruments in most older aircraft.
Your product didn’t feel cheaply made. Overall much better quality with the bezel and buttons and knobs. Also much easier to navigate and add fuel.
- Customer
- Aircraft
- EI Instrument
The equipment is fantastic, very intuitive, and easy to use.
- Customer
- Aircraft
- EI Instrument
I installed a VA-1A Volts/Amps Insturment [sic] in my 1970 V35B to replace the original analog amp meter. What a great dual purpose digital gauge! Installation was simple and the product is very well made. It goes well next to my SuperClock I installed a couple of years ago. EI makes great products and this one will satisfy the most discriminating owner.
- Customer
- Aircraft
- EI Instrument
The [unit] is easy to read and quick to respond. I have multiple EI units and have had good experiences with all.
- Customer
- Aircraft
- EI Instrument
I have heard only great words about EI… Won’t be able to install till at least April but I know you are very helpful when it comes to questions.
- Customer
- Aircraft
- EI Instrument