Easy to install, and the CGR was set up to my aircraft’s exact specifications.
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
Videos
Documents
Documents & Manuals
Testimonials
Customer Testimonials
Works Great! Getting used to menu the more I fly — Nice addition to airplane.
Excellent Service, superb product.
- Customer
Steven N. from Colorado
- Aircraft
Cessna 182E Skylane
- EI Instrument
We love our MVP-50P w/ its crisp, intuitive display and ease of operation.
Easy install and great gauges. Previous experience showed that EI’s units were… great prices and even better instruments. Being able to install the gauge as a primary instrument was a major plus.
- Customer
Logan from Montana
- Aircraft
Cessna 172B
- EI Instrument
Nice product and fulfills the requirement.
Why did you choose our products over the competition? Complete kit and ease of installation.
- Customer
Mitch G. from Canada
- Aircraft
DeHavilland DHC-2 beaver
- EI Instrument
The display is large and clear. The functions are simple and easy to use. Great purchase decision.
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.
Straight up install no issues. Works as advertised!
- Customer
John L. from Georgia
- Aircraft
Piper PA-28-151 Cherokee Warrior
- EI Instrument
Installing [EI’s FP-5L] in my RV 6. . . owned an FP-5L 6 years ago in a Cessna 206 on floats in a commercial operation in Alaska. Getting every ounce of payload, and coming home across Cook Inlet with the Cessna gas gauges near or on empty, I spent a lot of time explaining the benefits of the Fuel flow gauge… and reassured my passengers there were 12 gallons of fuel on board. I’m a believer…
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.
- Customer
Casey R. from Oklahoma
- Aircraft
Cessna 172M
- EI Instrument
