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A-104 Adapter Plate
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Product Overview
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Retail Prices
Included:
A-104 TR-1 Adapter
A-104 Adapter Plate
A-104
$128
Lead Time: Usually ships within 2–3 business days.

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Customer Testimonials
I have used your products in every airplane that I have owned over the years and have never had a problem. Thank You
- Customer
- Aircraft
- EI Instrument
[I chose EI because of its] Reputation and value.
Delivered much quicker than website banner! Responsive customer service, kudos to [customer service].
- Customer
- Aircraft
- EI Instrument
EI has the best customer service of any company that I’ve ever dealt with.
- Customer
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- EI Instrument
Works Great!
- Customer
- Aircraft
- EI Instrument
Gauge works great! Very happy with purchase.
- Customer
- Aircraft
- EI Instrument
Great Product, that provides a lot of very helpful engine data in an easy to use and see display! We are already finding cylinder cooling issues that we would’ve never known about before, and probably explains why we’ve had to replace that specific cylinder in the past. EI customer service on questions on how we wanted to set ours up was very helpful and positive. The CGR-30 had quite a few positive reviews online from other users.
- Customer
- Aircraft
- EI Instrument
Sales reps have been very friendly and helpful.
Excellent Service, superb product.
- Customer
- Aircraft
- EI Instrument
Good reviews and I don’t have to modify my panel. Additionally, the reps at Oshkosh were extremely helpful and answered all my questions.
- Customer
- Aircraft
- EI Instrument
Very impressed with the clarity and readability of the CGR-30P gauge.
- Customer
- Aircraft
- EI Instrument