Outstanding support. From the friendly demeanor of whoever answers the phone to all the way to [their sales representative]. Your CGR-30 series is superb.
FT-90 Fuel Flow Transducer
FAA Approved Instrument
- FAA TSO’d and STC’d with EI Instruments
- For 350 to 550 HP engines, or gravity-feed engines.
- Gold anodized aluminum body, 5.3 ounces.
- 1/4″ female NPT, 1.375 in. (H) x 1.620 in. (W) x 1.90 in. (L)
- 3 to 125+ GPH, .05 PSI drop at 20 GPH, .2 PSI drop at 40 GPH
Have a gravity fed engine?
Take a look at our FT-60, engineered for engines with an engine-driven fuel pump. See below for more details.
Questions?
8am–4:30pm PST M–F
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Product Overview
Model Comparison
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| Model | FT-60 | FT-90 | FT-180 |
| Engine Type | Up to 350 HP engines, engine driven fuel pumps only. | 350-550 HP engines, gravity fed engines. | 550 HP+ engines, engine driven fuel pumps only. |
| Fuel Flow | .6 to 70+ GPH | 2 to 125+ GPH | 2 to 250+ GPH |
| Connection | 1/4″ female NPT | 1/4″ female NPT | 1/4″ female NPT with #8 male flare adapters |
| Typical Use | Piston with Fuel Pump | Piston Gravity Fed | TurboProp |
| Specifications | Download Info Sheet | Download Info Sheet | Download Info Sheet |
Prices
Retail Prices
Packages include:
- FT-90 Transducer
- OLC-2 Connectors (3)
- Installation Instructions
Description
Package
Retail Price
FT-90 Fuel Flow Transducer
FT-90
$428

Specifications
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Testimonials
Customer Testimonials
Every person was willing to help me when I needed and the whole purchasing process was smooth. [And, E.I.] was recommended by my mechanic.
[I chose EI because of its] reputation [and the] quality and appearance of the instrument.
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Denis F. from Alberta Canada
- Aircraft
Piper PA-28R-201T Turbo Arrow III
- EI Instrument
EI’s team is great; you guys are the best.
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Brian N. from Arizona
- Aircraft
Piper PA28RT 201T
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Great product, frees up space
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Theodore S. from Florida
- Aircraft
Cessna 182Q Skylane
- EI Instrument
Good equipment at a good price. I have used your products before and have had great success.
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Ryan M. from Oregon
- Aircraft
Cessna 172L
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The quality and design appear to be excellent.
Simple and Easy.
- Customer
Aaron H. from Washington
- Aircraft
Cessna 140
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Excellent Service, superb product.
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Steven N. from Colorado
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Cessna 182E Skylane
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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.
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Eric B. From Texas
- Aircraft
Grumman American AA-5B Tiger
- EI Instrument
The older EI ultimate engine analyzer that came with my plane that I bought 7 years ago has always worked flawlessly.
Installed digital volt/amp gauge in PA 28-181. Great unit easy to install. Much better than original.
