[I chose EI because they offer a] certified replacement vs. back-up only and they look great.
- Customer
Nic C. from South Carolina
- Aircraft
Piper PA-28 Cherokee
- EI Instrument
8am–4:30pm PST M–F
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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-1 connector. The OLC-1 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.
The E-4 kit includes four (4) P-110F Fast Response EGT Probes.

E-4 EGT 4-Cylinder Package
E-4
$880
Lead Time: Usually ships within 2–3 business days.

Dimensions
2.50″ x 2.50″ x 3.65″ Deep, 2 1/4″ Flush Mount
Weight
7 oz (E-4 EGT Instrument 4-Cylinders Only)
Power Requirements
7.5 to 35 Volts, Typical: 0.1 amps @ 12 Volts
Display
Viewable in direct and indirect sunlight.
Backlight
Fully backlit and dimmable for night flights.
Certifications
FAA TSO’d, STC’d

[I chose EI because they offer a] certified replacement vs. back-up only and they look great.
We have other EI products currently and have always been satisfied.
Great to have all 6 egt’s, installation was straightforward. [I chose E.I. because of] price and availability.
Excellent customer service. Without a doubt the best aviation part I have purchased.
The installation was straightforward and quite easy. Reliability and accuracy far exceed the original [aircraft’s] oil pressure/temperature systems. Also, the price was about a third of the cost to replace the gauge cluster.
Love the look and having every piece of info in front of me… Better price and look [versus competition].
Easy to install and everything you need inside package. Good price, nice instrument and simple to use.
Good engineering support.
Nice experience working with [sales]… to configure my gauges.” Reason I chose EI? “Past experience with EI.
[The EAC-1] looks great running… The wiring harness was very well fabricated. Installation was easy- fit perfectly in an existing hole in panel. The brightness of the display is excellent.
I started with a CGR-30C. I loved it so much, I added a CGR-30P… [Your customer service] was a great help configuring it and EI gave me a great deal. I am now an EI customer for life!
Good reviews and I don’t have to modify my panel. Additionally, the reps at Oshkosh were extremely helpful and answered all my questions.