Home / ei Products / Accessories / P-102-3/8 CHT Probe – Piggy Back
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
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
Always built well. Always dependable. Been using & relying on EI equip for over 35 years!
Easy install, good product. [I chose EI because of my] experience with [the] product.
- Customer
- Aircraft
- EI Instrument
People [at EI] were great to work with.
- Customer
- Aircraft
- EI Instrument
I have worked with your products before and I like them.
- Customer
- Aircraft
- EI Instrument
EI has the best customer service of any company that I’ve ever dealt with.
- Customer
- Aircraft
- EI Instrument
[EI’s FP-5L with Aux Carb Temp Option] gave me fuel flow & Carby temp & was easy to retrofit.
[Customer service] is great!
- Customer
- Aircraft
- EI Instrument
EI representatives… have been very helpful, truthful, and knowledgeable… We had no idea, that a few weeks later [after our purchase], we would need to have a Top Overhaul. What great timing! Having your engine monitor installed in our plane will hopefully help us keep it out of the shop for further engine repairs.
- Customer
- Aircraft
- EI Instrument
Great product. So easy to read compared to the originals.
Works Great! Love it!
My interactions with EI were all very positive. When I ordered the Dual CGR 30 instruments I was told there would be about a 6 week delivery time. It took a little less than 4 weeks. I am extremely happy with the service and product.