Great product. So easy to read compared to the originals.
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
$388

Specifications
Videos
Documents
Documents & Manuals
Testimonials
Customer Testimonials
My mechanic said that your product was very good, and he was correct.
Installed digital volt/amp gauge in PA 28-181. Great unit easy to install. Much better than original.
After enquiring through (one of) your dealers and calling EI directly it was clear that you provided good customer service and would likely not drop the ball on tech support, and so far I have been right.
Good engineering support.
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Richard B. from New Mexico
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Luscombe Model 8E Silvaire Deluxe
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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!
- Customer
Andrew R. from Florida
- Aircraft
Piper PA-28-180 Archer
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Easiest company to deal with and an awesome product! Price, Certified for Primary, and Features.
- Customer
Justin E. from California
- Aircraft
Piper PA-30 Twin Comanche
- EI Instrument
EI tech support is the best.
Great product at a great price …. (and) reliability.
Your products always work great! Great customer service and a quality product that we have used for years.
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Brenton C. from Tennessee
- Aircraft
Cessna 172M
- EI Instrument
Your guys were great at answering all my questions . . . .
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Alex R. from Canada
- Aircraft
1968 180H
- EI Instrument
Great company to deal with. Excellent customer service. [I chose this E.I. instrument because it’s] simple and easy to use.
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Dale C. from Ohio
- Aircraft
Cessna 182D Skylane
- EI Instrument
