McFarlane Aviation Products

Part Number: MC0426517-1

FUEL QUANTITY TRANSMITTER

Eligibility Notice

Please verify that this product is eligible for your aircraft before adding it to your cart.

Click here to view product eligibility.

Approval	FAA-PMA
Condition	New
Manufacturer	McFarlane Aviation, Inc.
Qty Per A/C	1
Unit of Measure	Each
Retail Price	$1273.21
Your Price	$458.99
Stock Status	In Stock

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Product Details

Also available in the fuel quantity transmitter kit FQT-KT-1.

Fuel Quantity Transmitters

More accurate and lasts longer!

McFarlane fuel quantity transmitters are direct replacements for originally installed Stewart Warner type fuel quantity transmitters. Eliminates the need for expensive transmitter conversion kits that require replacement of fuel gauges and wiring. McFarlane transmitters are engineered to be compatible with the original fuel quantity gauge and wiring which uses time proven technology and reliability.

Each McFarlane transmitter is manufactured using the new Stewart Warner "thick film ceramic" resistor technology. The benefits are longer life and increased accuracy. All components are thoroughly tested to ensure reliable operation.

Save hundreds of dollars!
Stewart Warner direct replacement
No modifications required

Convenient Kits

Available individually or in kits including transmitter, gasket(s), and screw/seal assemblies as applicable.

Electricity in the Fuel Tank. Is it Safe?

*** Installation Warning ***

Do not replace Rochester fuel quantity transmitters with the Stewart Warner transmitters. The electrical function is not compatible. Stewart Warner transmitters must be used to replace Stewart Warner transmitters only. Replacing Rochester transmitters with Stewart Warner transmitters will result in erroneous fuel quantity indications.

Some Cessna and Piper aircraft have been modified with a Service Kit to use the Rochester fuel quantity indicating system. This modification required changing the fuel quantity gauge, transmitter, and other electrical components. Do not use the McFarlane (Stewart Warner) transmitters as a replacement for these aircraft.

Rochester Transmitter:

Early Style Stewart Warner Transmitter:

Other Fuel System Components also available!

Supersedures

Eligibility Notice

Please verify that this product is eligible for your aircraft before adding it to your cart.

Click here to view product eligibility.

OEM Part Number	McFarlane Part Number	Comment
0426517-1	MC0426517-1

Related Categories

Fuel System Components >> Fuel Quantity Transmitters and Parts >> Transmitters

Eligible Aircraft

Make	Series	Model	Beginning S/N	Ending S/N	Comment	Eligibility Chart
Cessna	150	150	17001	17999	See Note 1	1189
Cessna	150	150	59001	59018	See Note 1	1189
Cessna	150	150A	15059019	15059350	See Note 1	1189
Cessna	150	150B	15059351	15059700	See Note 1	1189
Cessna	150	150C	15059701	15060087	See Note 1	1189
Cessna	150	150D	15060088	15060772	See Note 1	1189
Cessna	150	150E	15060773	15061532	See Note 1	1189
Cessna	150	150F	15061533	15064532	See Note 1	1189
Cessna	150	150G	15064533	15067198	See Note 1	1189
Cessna	150	150H	15067199	15069308	See Note 1	1189
Cessna	150	150J	15069309	15071128	See Note 1	1189
Cessna	150	150K	15071129	15072003	See Note 1	1189
Cessna	150	150L	15072004	15075781	See Note 1	1189
Cessna	150	150M	15075782	15079405	See Note 1	1189
Cessna	150	A150K	A1500001	A1500226	See Note 1	1189
Cessna	150	A150L	A1500227	A1500523	See Note 1	1189
Cessna	150	A150M	A1500524	A1500734	See Note 1	1189
Cessna	150	F150F	F1500001	F1500067	See Note 1	1189
Cessna	150	F150G	F1500068	F1500219	See Note 1	1189
Cessna	150	F150H	F1500220	F1500389	See Note 1	1189
Cessna	150	FA150K	FA1500001	FA1500081	See Note 1	1189
Cessna	150	FA150L	FA1500082	FA1500120	See Note 1	1189
Cessna	150	FRA150L	FRA1500121	FRA1500261	See Note 1	1189
Cessna	150	FRA150M	FRA1500262	FRA1500336	See Note 1	1189

Eligibility Chart 1189 Notes:

This transmitter does not fit aircraft equipped with extended range fuel tanks.
Do not use this transmitter with gauge cluster P/N C669562-108 (Rochester® manufacture). This gage cluster could have been factory installed on aircraft built in 1978 or newer beginning with S/N 17269310.
Do not use this transmitter in aircraft with extended range fuel tanks with gage cluster P/N C669562-0109 (Rochester® manufacture). This gage cluster could have been factory installed on aircraft built in 1979 or newer beginning with S/N 17271035.
Includes aircraft with extended range fuel tanks.
188 model series with wing fuel tanks only.

Frequently Asked Questions

Question
How do I keep contaminants out of my fuel system? The fuel selector valve works in unscreened fuel. Contaminated fuel can cause selector valve seal damage. When fueling from possibly contaminated fuel sources McFarlane recommends the use of a fuel filter, such as Mr. Funnel or another filtering device, to reduce trash in the fuel system.
What is SEB99-18R1 about? Cessna SEB99-18R1 describes periodic checks of the fuel gauging system.
Can I use a McFarlane transmitter on a Cessna 152 aircraft? No, the fuel indicating system on a Cessna 152 is unique and McFarlane has not designed a transmitter for them yet.
I installed a new fuel quantity transmitter and the system is still not working. What is wrong? There are several other components in the fuel indicating system which could be the issue or are causing the indication problems: Ensure that your aircraft fuel indicating system utilized Stewart Warner style transmitters. Even if your aircraft originally came with that style, there were many Cessna Service Bulletins to replace them with the Rochester style. Our transmitters will not work with those components if they have been changed. This was a very common SB when Cessna switched over to Rochester. Transmitter Identification shows the difference in the Rochester style and the original Stewert Warner transmitter. McFarlane transmitters and Cessna Stewart Warner transmitters have an electrical resistance range of about 32 ohms when in the full position and 250 ohms in the empty position. This can be measured with an ohm meter connected between the wire terminal and the metal body. Note that the gold dichromate corrosion treatment on the zinc plating is a poor conductor. The metal body must be scratched a little to get a good electrical connection. The Rochester transmitter has a much different resistance pattern than the Stewart Warner or McFarlane transmitter. Consult your log books and check the part numbers of the fuel gauges and transmitters. Do not rely on Illustrated Parts Catalog or eligibility. With the age of most of the general aviation fleet, the possibility of corrosion in the wires or grounding is very likely. The gauge (indicator) may not be working correctly or properly calibrated. Since the transmitter gauge system works with very low voltage and very low milliamp electrical flow it is very sensitive to proper grounding and high resistance in electrical connections. Most problems are related to electrical connections. Excess resistance in the transmitter circuit can be detected by measuring the transmitter resistance with the transmitter being installed but without the wire connected at the terminal, and then measuring the resistance at the transmitter wire at the back of the gauge with the transmitter wire connected to the transmitter terminal and the transmitter wire disconnected from the fuel gauge and the other ohm meter connection to a ground at the back of the gauge. The resistance readings should be very close to the first resistance reading. In other words, you are measuring the transmitter resistance first without the airplane circuit and then comparing the reading with the airplane electrical circuit. If the preceding wiring check shows good, the problem is likely in the gauge. The fuel gauge has a brass grounding strap that grounds the internal electrical coils to the gauge case. With years of service this grounding strap can develop a thin layer of corrosion that restricts electrical flow. When this happens the gauge will show more fuel than what is in the tank which is not good! Cleaning this ground strap should fix the problem. Refer to the Cessna service manuals for detailed trouble shooting and maintenance information. Caution! Never short the battery power to the transmitter wire! It will take only seconds before the stainless steel resistance wire in the Cessna transmitter will glow red hot in the fuel tank. The hot wire could explode the tank! Never have power on when trouble shooting the fuel gauging system. Electricity in the Fuel Tank. Is it Safe? Always check the fuel gauge system for proper calibration per the Cessna maintenance instructions.