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Cessna Physical Bolt-In Fuel Sender Replacements
CiES fuel level senders are a physical bolt-in replacement for Cessna Aircraft fuel tank quantity. They are applicable to most Cessna models. Here you’ll find the models covered by the current FAA STC.
Please note: CiES fuel senders require a power wire for operation.
The complex sender circuitry in a CiES fuel sensor requires an extra wire to operate. For general installations, you can download installation instructions in pdf format. For specific installations, go here for Cessna Twin installation instructions.
Unless otherwise specified, we support 30+ fuel gauges and instrument panels. These are also covered by the STC. If you require support for an existing gauge (aircraft must have a tank and gauge map), please contact us for details before ordering.



Note: Not all parts shown are included with every sender. Images are for illustrative purposes only. Please refer to your order confirmation or contact our sales team to verify the exact components included in your shipment.
DISCOVER
Cessna Fuel Senders
Product Details
The CiES digital fuel senders use a high technology sensor system that allows repeatable accurate measurement of fuel in aircraft tank. This advanced technology and patented sensor system allows fuel measurements down to a change in fuel level to less than 0.03 of an inch. This measurement represents much less than 10ths of a gallon of AVGAS or Jet A. The non-contact measurement method insures a lifetime of operation providing the same consistent fuel level output in the cockpit with modern digital fuel indication.
Available Downloads
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150 Omni-Vision, Aerobat
(Models 150, 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 150J, 150K, 150L, 150M, A150 A150K, A150L, A150M)
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152 Omni-Vision, Aerobat
(Models 152, A152)
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170
(Models 170, 170A, 170B)
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172 Skyhawk
(Models 172, 172A, 172B, 172C, 172D, 172E, 172F, 172G, 172H, 172I, 172J, 172K, 172L, 172M, 172N, 172P, 172Q, 172R, 172RG, 172S, F172D, F172E, F172F, F172G, F172H, F172K, F172L, F172M)
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175 Skylark
(Models 175, 175A, 175B, 175C)
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177 Cardinal
(Models 177, 177A, 177B, 177RG, F177RG)
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180 Skywagon
(Models 180, 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H, 180J, 180K)
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182 Skylane
(Models 182, 182A, 182B, 182C, 182D, 182E, 182F, 182G, 182H, 182J, 182K, 182L, 182M, 182N, 182P, 182Q, 182R, 182S, 182T, F182P, F182Q, FR182, R182, T182, T182T, TR182)
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185 Skywagon
(Models 185, 185A, 185B, 185C, 185D, 185E, A185E, A185F)
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190 Businessliner
(Model 190)
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195 Businessliner/LC-126 Military
(Models 195, 195A, 195B, (LC126A, B, C))
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205 Stationair
(Models 210-5 (205), 210-5A (205A))
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206 Stationair, Super Skylane
(Models 206, P206, P206A, P206B, P206C, P206D, P206E, U206, U206A, U206B, U206C, U206E, U206D, U206F, U206G, TP206A, TP206B, TP206C, TP206D, TP206E, TU206A, TU206B, TU206C, TU206D, TU206E, TU206F, TU206G, 206H, T206H)
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207 Skywagon, Stationair
(Model 207, 207A, T207, T207A)
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208 Caravan, Grand Caravan
(Models 208, 208B)
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210 Centurion
(Models 210, 210A, 210B, 210C, 210D, 210E, 210F, 210G, 210H, 210J, 210K, 210L, 210M, 210N, 210R, P210N, P210R, T210F, T210G, T210H, T210J, T210K, T210L, T210M, T210N, T210R)
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T303 Crusader
(Model T303)
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310 / USAF U-3
(Models 310 310A(USAF U-3A) 310B 310C, 310D 310E (USAF U-3B) 310F 310G 310H E310H 310I 310J 310J-1 E310J 310K 310L 310N 310P T310P 310Q E310H T310Q 310I 310R T310R)
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320 Skynight
(Models 320, 320-1, 320A, 320B, 320C, 320D, 320F, 320E)
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335
(Model 335)
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337 Skymaster
(Models 337, 337E, 337A (USAF 02B), T337E,337B 337F, M337B (USAF 02A), T337F,T337B 337G, 337C,T337G T337C, 337D,T337D 337H, P337H,T337H T337H-SP)
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340
(Models 340, 340A)
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350 Corvallis
(Model LC40-550FG)
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400 Cessna TTx, TT Corvallis
(Models LC41-550FG, LC42-550FG, T240)
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401 Utiliner
(Models 401, 401A, 401B)
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402 Utiliner, Businessliner
(Models 402, 402A, 402B, 402C)
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411
(Models 411, 411A)
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414 Chancellor
(Models 414, 414A)
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421
(Models 421, 421A, 421B, 421C)
Item | Cockpit Display Manufacturer | Cockpit Display Model | Data Converter (LRU1) | Fuel Sender Output Capability | Instrument Input Capability |
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1 | JP Instruments | EDM 900 | N/A | Voltage 0-5 VDC | 0-4.7 VDC |
2 | JP Instruments | EDM 930 | N/A | Voltage 0-5 VDC | 0-4.7 VDC |
3 | JP Instruments | EDM 900 | N/A | Digital Frequency 64Hz-10kHz | 0-100 kHz |
4 | JP Instruments | EDM 930 | N/A | Digital Frequency 64Hz-10kHz | 0-100 kHz |
5 | Electronics International | MVP-50 | EDC-33P | Voltage 0-5 VDC | 0-18 VDC |
6 | Electronics International | CGR-30 | EDC-33P | Voltage 0-5 VDC | 0-18 VDC |
7 | Electronics International | MVP-50 | EDC-33P | Digital Frequency 64Hz-10kHz | 0-6 kHz |
8 | Electronics International | CGR-30 | EDC-33P | Digital Frequency 64Hz-10kHz | 0-6 kHz |
9 | Ultra FEI | Auracle CRM2120 | N/A | Voltage 0-5 VDC | 0-5 VDC |
10 | Aerospace Logic | FL25X | N/A | Voltage 0-5 VDC | 0-5 VDC |
11 | Aerospace Logic | FL20XD | N/A | Digital Frequency 64Hz-10kHz | 10-300 Hz |
12 | Aerospace Logic | FL21X | N/A | Voltage 0-5 VDC | 0-1 VDC |
13 | Aerospace Logic | FL20X | N/A | Voltage 0-5 VDC | 0-1 VDC |
14 | Garmin | G1000 | GEA 71 | Voltage 0-5 VDC | 0-5 VDC |
15 | Garmin | G950 | GEA 71 | Voltage 0-5 VDC | 0-5 VDC |
16 | Garmin | G1000 | GEA 71 | Voltage 0-5 VDC | 0-1 VDC |
17 | Garmin | G950 | GEA 71 | Voltage 0-5 VDC | 0-1 VDC |
18 | Garmin | G1000 | GEA 71 | Digital Frequency 64Hz-10kHz | 0-100 kHz |
19 | Garmin | G950 | GEA 71 | Digital Frequency 64Hz-10kHz | 0-100 kHz |
20 | Rochester Gauges | FQ-40XX Series | N/A | Voltage 0-5 VDC | 0-1 VDC |
21 | JP Instruments | EDM 960 | EDM 950 | Voltage 0-5 VDC | 0-4.7 VDC |
22 | JP Instruments | EDM 960 | EDM 950 | Digital Frequency 64Hz-10kHz | 0-100 kHz |
23 | Garmin | G500/G600 Txi | GEA 110 | Voltage 0-5 VDC | 0-5 VDC |
24 | Garmin | G500/G600 Txi | GEA 110 | Digital Frequency 64Hz-10kHz | 0-30,000 Hz |
25 | Garmin | G2000 | GEA 71 | Voltage 0-5 VDC | 0-1 VDC |
26 | Garmin | G3X | GEA 24 | Digital Frq 64Hz-10kHz, Vlt 0-5 VDC | 0-100 kHz, 0-5 VDC |
27 | Dynon | Skyview HDX | N/A | Voltage 0-5 VDC | 0-5 VDC |
28 | Garmin | GI 275 | GEA 24 | Digital Frq 64Hz-10kHz, Vlt 0-5 VDC | 0-100 kHz, 0-5 VDC |
29 | N/A | C662041-0101/2 | N/A | Voltage 0.01-2.78 VDC | Voltage 0.01-2.78 VDC |
General Specification
TSO-C55a
Floats, arm lengths, and travel angles vary depending on tank dimension and application.

Accuracy Range
Angular Travel Range of Sensor
0.18° CiES between angular steps.
1024 Discreet points over 180° swing.

Temperature
Operating Temp Range
-55° to 85° Celsius (C)
-67° to 185° Fahrenheit (F)
Voltage
Operating Voltage Range
9–28 VDC
Signal Output Options
Frequency/Resistance/Voltage
Output Type | Signal | Range | Output Range | Formula | Rise Time |
---|---|---|---|---|---|
Temperature | Output to be the following: | ||||
Option 1 | 0-5 Vdc Square Wave | -50°C to 50°C -58°F to 122°F | FREQ 1,200Hz - 490Hz | Temp = 123 - (87,252.07 / Frequency) | 105nS |
Fuel Level | Output to be one of the following: | ||||
Opt 1 Frequency | 0-5 Vdc Square Wave | 5° - 175° Angular Travel | FREQ 16,384Hz - 64Hz | FREQ (Hz) = 65,538 / (4 + (Deg * 5.6889)) | 115nS |
Opt 2 Resistance | Resistance 0 - 280 Ohm | 5° - 175° Angular Travel | Resistance 0 - 280 Ohm | ||
Opt 3 Voltage | Voltage 0 - 5 Vdc | 5° - 175° Angular Travel | Voltage 0 - 5 Vdc |
Mounting & Installation
CiES Fuel Senders
CiES senders are designed to be a side or top mount configuration. Torque screws 18-22 inch-pounds (in lb) using a crossing pattern.
Warning: Over-torquing or using a circular pattern may cause “damage” to gasket and/or sender.
Note: Hardware is “NOT” supplied with senders unless requested. We recommend AN, AS, NAS, MS or equivalent hardware.

SAE AS405c
CiES Fuel Senders
3.1.1 | Materials | 5.5 | Position |
3.1.2 | Workmanship | 5.6 | Test Liquid |
3.2 | Identification | 6.1 | Scale Error |
3.3.1 | Temperature | 6.2 | Friction |
3.3.2 | Humidity | 6.3 | Leak Test |
3.3.3 | Vibration | 6.4 | Position Error |
3.3.4 | Altitude | 6.5 | Power Variation |
3.3.5 | Fire Hazard | 6.6 | Dielectric |
3.3.6 | Seal | 6.7 | Maximum Operating Temp |
3.4 | Radio Interference | 7.0 | Qualification Tests |
3.5 | Magnetic Effect | 7.1.1 | Low Temperature |
4.3 | Power Variation | 7.1.2 | High Altitude – Low Temp |
4.4 | Power Indication | 7.3 | Vibration |
4.5 | Tank Moving Parts | 7.3.1 | Resonance |
4.6 | Filling Medium | 7.3.2 | Cycling |
5.1 | Atmospheric Conditions | 7.4 | Humidity |
5.2 | Vibration | 7.5 | Magnetic Effect |
5.3 | Vibration Equipment | 7.6 | Sealing |
5.3.1 | Linear Motion Vibration |
DO-160
Environmental
The TSO article meets the minimum operation performance standard requirements (MOPS) for TSO C55a.
Environmental Qualification Per RTCA/DO-160(F) | ||
---|---|---|
4.0 | Temperature & Altitude | B2 |
5.0 | Temperature Variation | B |
6.0 | Humidity | B |
7.0 | Operational Shocks | A |
8.0 | Vibration | S (M) |
9.0 | Explosive Atmosphere | E1,2 |
15.0 | Magnetic Effect | Z |
16.0 | Power Input | B |
17.0 | Voltage Spike | B |
18.0 | Audio Frequency Susceptibility | B |
19.0 | Induced Signal Susceptibility | ZC |
21.0 | Emission of Radio Frequency Energy | L |
25.0 | Electrostatic Discharge | A |
There is a current lead time of 3-4 weeks. If you have an AOG situation, we may be able to rush your order for an additional fee. Please call 541-977-1043 for more information.
We do ship globally. When placing your order, you may select from the following shipping options:
- Ground - Lower 48
- 2nd Day Air
- Next Day Air
- Canada
- Australia
- South Africa
- Other International
- Your shipping account
CiES Inc. warrants all parts in your new fuel level transducers to be free from defects in material and workmanship under normal use. Our warranty is limited to repair or exchange for the original purchaser. Part(s) must be returned, shipping prepaid, within five years of the original purchase date. Installation labor is the responsibility of the aircraft owner.
Under this warranty, CiES Inc. is not responsible for any service charges, including removal, installation, nor any other consequential damages. This warranty is void on any product which has been subject to misuse, accident or damage caused by negligence. This may include mis-wiring or altering the units without the written guidance of a member of the CiES team. Upon inspection of returned units, CiES will determine if any of the aforementioned are found to be the cause of failure and charge for refurbishment accordingly.
Most issues present during install can be avoided by a strict adherence to our current installation manual. If you have further questions about installation, they can be solved by our team of friendly technical support specialists. If our specialists are unable to solve the installation issue, they will provide an RMA Work Order for returning your units. This number must be present on and inside your package. If the cause of failure is determined to be the result of manufacturing defects or workmanship, your units will be shipped expedited to the address found on the RMA work order at no cost to you. If the failure is a result of misuse or negligence from the installer, the units will be shipped back at the speed you requested and billed to the customer named on the RMA work order.
For uninstalled, unaltered, new parts returned to stock, CiES Inc. will charge a flat $20 restocking fee per unit. Please contact us should you need to replace or return CiES products.
Our Customers Say It Best
Best thing I have added to my aircraft. Takes all the stress out of ensuring VFR/IFR reserves. Highly recommend it!
Lynn Pease
Cessna 182G Skylane
Best aviation product I have ever purchased. Rock solid. Great customer support.
Justin Wilt
Cessna 182P Skylane
My family just completed a 3,000 mile round-trip flying odyssey from Pittsburgh to the Turks and Caicos, in my 1973 C172. I would have never considered flying the long overwater routes without the complete confidence that your fuel senders have provided.
Captain BJ Spratt
Cessna 172
I had wanted the CGR as a fancy fuel gauge at first, with some bonus round dials ditched and extra logging. The leadtime killed that plan when the fuel gauge unexpectedly died on me. I needed something NOW. Having done it this way, I realize that is the better option anyway, since it frees up two primary instruments on the CGR. Expensive, but it worked out.
And I love the CiES senders. They rock. The Aerospace Logic gauge is fine. Does what it says on the can.
Verified Purchase
Cessna 172S Skyhawk SP
Amazing technology. After 35 years flying my 182, I installed CiES senders and G275 EIS and the fuel shown and pumped is always accurate to the gallon. Wonderful!
John Seibert
Cessna 182P Skylane
Outstanding system. Very accurate. Love my CiES sensors. Would recommend to anyone. Great service.
Roy Callender
Cessna 172 Skyhawk
Just did a new install of CiES fuel senders to JPI indicator. The difference between the Cessna floats and CiES is nothing short of amazing. Highly recommend the product.
Keith Stout
Cessna 185 Skywagon
I purchased two CiES senders for my 1978 Cessna U206G that I am in the process of refurbishing. The CiES senders are connected to a brand new JPI EDM 930. After making the connections, we realized that we weren’t getting a fuel readout at the 930. After a few calls to JPI, we gave up and called CiES. CiES quickly diagnosed the problem, which was an incorrect setting in the 930. Even though I called JPI prior to manufacturing my EDM 930 and told them specifically that we’d be connecting to the CiES senders and a digital frequency signal, JPI incorrectly set the unit to receive a resistance signal.
CiES staff walked me thru the process to change the input which fixed the problem. They also gave me their personal cell phone number in case I had any problems! Now that’s what I call extreme customer service.
Thanks for the great product and great customer support.
Jim Cehula
Cessna U206G
I bought sensors for my Cessna 185 a few months ago and had some difficulties with the installation. Much of it was [due to an] incorrect schematic and wiring bundles from another company. Other issues were created by incomplete information in the Garmin 275 EIS installation manual.
Enter Daniel, your excellent customer support representative. Daniel did a great job of helping me through the many issues I encountered, and we finally got the installation completed and flown. He even invited me to call him on his mobile, should I need help outside business hours. That’s unheard of these days.
There are a lot of companies that can build a better mousetrap; but those which build that better mousetrap AND have great customer support are quite rare. You have that combination.
Michael Maya Charles
Cessna 185
It was a few years ago that I installed my CiES senders in my Cardinal and quite often brag about their accuracy. And, when I was working on the installation around 10 o’clock at night, I dialed the number for CiES with the idea that I’d leave a message and they answered. They answered not only my questions, but also the questions I didn’t know I should ask. Thanks.
Mike Guidry
Cessna 172 Cardinal
The install and support of CiES fuel senders has been easy and helpful. Very happy with our choice as we now have very accurate fuel levels!
Williams Hayes
Cessna Skymaster
We have our CiES fuel senders installed with an Aerospace Logic gauge in our Cessna Cardinal. They are spot on. The Cardinal has a ring with holes in the tank - 22gal to holes. I filled it up to holes, turned master on and exactly 22.0 showed. No guessing game now. They are totally awesome.
Allen Rude
Cessna Cardinal 177B
Six thousand feet above the coastal route from Ketchikan, Alaska to Friday Harbor, it’s never been more important to know exactly how much fuel you have! Thankful for the accuracy and reliability of our CiES fuel senders. Love them.
David Gerhardt
Cessna 185 Skywagon
I installed a JPI EMD900 in my 1972 177B last year when I put the overhauled engine in, and was not able to make the original Cessna fuel senders work with it. I ordered a set of CiES senders and finally got them installed in February. I have put a few tanks of fuel through since, and they have indicated within a liter or two of both the fuel consumption (as measured by the JPI) and the amount needed to refill the tanks. I am very pleased with the result, and it is a huge sense of peace of mind when flying in places where fuel sources are several flying hours apart.
Verified Purchase
Cessna 177B Cardinal
Learn More
Learn More

A Comprehensive Overview
What is a Fuel Sender?
Fuel senders are components of your aircraft's fuel system responsible for measuring the level of fuel in the fuel tanks and sending that information to the fuel gauge. The fuel senders are located inside the aircraft's fuel tanks and consists of a nitrile rubber (NBR) float, a hard-anodized aluminum rotor and housing, nickel-plated Neodymium magnets, complex electronic equipment (outside the fuel tank) and other quality components.

Top Five Sender Problems Solved with Advanced Tech
A fuel sender is a component of an aircraft fuel system that measures the amount of fuel in the fuel tanks and sends that information back to the fuel gauge. When a fuel sender goes bad or fails, the fuel gauge may not accurately display the fuel level. This can be frustrating and potentially dangerous.
WE’RE COMMITTED TO HIGH QUALITY, SO THE
Next Generation Can Trust Their Fuel Gauges.
We’re committed to providing an accurate, safe and reliable fuel level reading, as well as providing you with the highest level of service. Once you have installed magnetic field fuel sensing, your fuel level sensing problems will be solved. When you see the difference, you’ll always choose us for your fuel and liquid level sending needs.