I have been installing avionics since 1996. This was THE BEST wire harness I have ever seen!
P-128-S – Sealed Tip OAT/Carb Temp Probe
FAA Approved Instrument
- FAA TSO’d, PMA’d
- Accurate and stable, precise temperature measurements.
- For use in pressure environments, uses a precision connector.
- Robust Construction, stainless steel body.
- Perfected over decades of testing and field trials.
Compatible with:
A-1, CA-1, EAC-1, MVP-50P, CGR-30, and UBG-16
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Product Overview

Prices
Retail Prices
Packages include:
- P-128-S – Sealed Tip OAT/Carb Temp Probe
- Installation Instructions
Description
Package
Retail Price
P-128-S – Sealed Tip OAT/Carb Temp Probe
-
$128

Specifications
Specifications
Typical Applications
OAT/Carb Temp Readings
Operating Range
-80° – 700°F Max
Certifications
FAA, TSO’d, PMA’d
Configuration
Type K, Ungrounded
Videos
Documents
Documents & Manuals
Testimonials
Customer Testimonials
After a full IFR install on my Cessna 175, my two favorite instruments without question is the CGR-30 Combo set. Simple and customizable, the data is invaluable!
I like being able to get a hold of a technical expert immediately when calling into the main EI phone number… The build quality of the sensors, display unit and EDC seem very good… I appreciate the business practices of EI and have had an EI R-1 Tachometer which has worked flawlessly for the past 20 years.
- Customer
Eric B. From Texas
- Aircraft
Grumman American AA-5B Tiger
- EI Instrument
Works great!
- Customer
Ronald G. From Washington
- Aircraft
Cessna 195A
- EI Instrument
Nice bright display.
Compact, precise, awesome!
- Customer
Harvey C. from Maine
- Aircraft
Cessna A185F Skywagon and AgCarryall
- EI Instrument
Simple and Easy.
- Customer
Aaron H. from Washington
- Aircraft
Cessna 140
- EI Instrument
[Customer Support was] very responsive and helpful. [I heard about EI through] advice from others. Just about everyone I asked about the CGR-30 loves it and your company.
- Customer
Brett U. from Idaho
- Aircraft
Piper PA-28 S-180 Cherokee
- EI Instrument
We’ve worked with EI for years and love the product and support always received. Quality & dependability.
- Customer
Tammy B. from North Carolina
- Aircraft
Air Tractor AT-802
- EI Instrument
Very happy with our new tachometer!
I really appreciate the quality of communication about my order. The instrument offers the right functionality (being a primary instrument) in the right form factor for my application.
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
Phillip B. From Oklahoma
- Aircraft
Cessna 210N Centurion / Turbo Centurion
- EI Instrument