This is a high quality instrument and works perfectly. Well designed, well constructed and well documented. I couldn’t be more pleased!
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
We’ve worked with EI for years and love the product and support always received. Quality & dependability.
- Customer
Tammy B. from North Carolina
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The layout and quality is impressive.
 I have other EI products and your support is great.
- Customer
Steven K. from FL
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C150l
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Very affordable… great installation instructions. [I chose EI because of its] price point, certified primary.
- Customer
Benjamin T. from South Carolina
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Piper PA-28-181 Archer II
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Installed digital volt/amp gauge in PA 28-181. Great unit easy to install. Much better than original.
Amazing aftermarket service. Good quality products
- Customer
YAJASI Y. from New Guinea
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Pilatus Porter PC-6
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[Customer Support was] very responsive and helpful. [I heard about EI through] advice from others. Just about everyone I asked about the CGR-30 loves it and your company.
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Brett U. from Idaho
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Piper PA-28 S-180 Cherokee
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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 equipment is fantastic, very intuitive, and easy to use.
- Customer
Gregory S. From Brazil
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Air Tractor AT-502A
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Great… price [&] support
- Customer
Harry V.D.H. from New Zealand
- Aircraft
Piper PA-28R-200 Arrow II
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Awesome Product! Great product and fantastic support!
- Customer
David B. from Texas
- Aircraft
Cessna 182Q Skylane
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