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Stewart Warner 391A-F L Swing 10-15 Fuel Level Sending Unit-240/33 Ohm

Specs
Overall Length:
15.00
Sold in Quantity:
Each
Ohm Range:
240 empty, 33 full
Notes
Can be shortened to 10.00"
Stewart Warner 391A-F L Swing 10-15 Fuel Level Sending Unit-240/33 Ohm
Stewart Warner 391A-F L Swing 10-15 Fuel Level Sending Unit-240/33 Ohm
Stewart Warner 391A-F L Swing 10-15 Fuel Level Sending Unit-240/33 Ohm
Stewart Warner 391A-F L Swing 10-15 Fuel Level Sending Unit-240/33 Ohm
Stewart Warner 391A-F L Swing 10-15 Fuel Level Sending Unit-240/33 Ohm
Stewart Warner 391A-F L Swing 10-15 Fuel Level Sending Unit-240/33 Ohm
Stewart Warner 391A-F L Swing 10-15 Fuel Level Sending Unit-240/33 Ohm
Stewart Warner 391A-F L Swing 10-15 Fuel Level Sending Unit-240/33 Ohm

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

What brand of gauge will you use?
These Stewart Warner brand fuel senders are compatible with all Stewart Warner and Classic Instruments fuel gauges.

How deep is your tank?
Measure the depth of your tank where the fuel sender arm will be located. Choose the sender with an operating range which includes that dimension.

Right or Left-swing arm?
Most fuel gauge senders attach with a 5-screw pattern. Two of these screws are farther apart than the other three. Position yourself such that the 2 wider-spaced holes are closest to your chest; a right side sender will have the arm (or "float") extending to your right, and a left side sender will have the arm extending to your left. This only matters when replacing an existing sender. A first-time installation can use either one, just drill the mounting holes accordingly.

LH/RH Swing Guide (Link) 

OHM
The OEMs used several different resistance ranges for fuel level indication over the years. However, some of the aftermarket gauge manufacturers follow the common Stewart Warner values (240 ohm empty, 33 ohm full). The gauges and senders that we carry (385 & 391) use these standard Stewart Warner values.

Ohms Chart (Link)
Installation Instructions (PDF)

Customer Reviews

This product has no reviews.

Product Q&A

4 questions : 4 answers

1 answers

will this work with 1989 Ford F250 gauges?

8621
May 04, 2014

will this work with 1989 Ford F250 gauges?

Answers

May 05, 2014
EricM
We apologize but the sending unit number 665391A will not function properly with your Ford gauges. This sender is 33-240 Ohm and Ford uses different Ohm ratings such as 0-30, 30-90, etc. If you have an application and cannot get the correct one we do have an interface module that will mate mismatched sender to gauge issues under number 91012910.
1 answers

how do you tell left or right for this sender I put the two holes farthest apart to my chest and the float is is across my body not on the left or right 385c-f/385b-f

mike
chicago
December 09, 2011

how do you tell left or right for this sender I put the two holes farthest apart to my chest and the float is is across my body not on the left or right 385c-f/385b-f

Answers

December 09, 2011
Zach
Speedway part number 665391A. Your sender may be different than our replacements. Ours will follow the diagram we provide on the website. This is the diagram: http://static.speedwaymotors.com/images/charts/Fuel%20Senders.jpg
1 answers

I have a 1954 Kaiser fuel gauge in a speedometer cluster. How can I find out what Ohms it is? I believe that car ran a 6-volt system. Any help is greatly appreciated so that I can buy the appropriate sender. Thank you

Chevie
Greensburg, PA
January 04, 2011

I have a 1954 Kaiser fuel gauge in a speedometer cluster. How can I find out what Ohms it is? I believe that car ran a 6-volt system. Any help is greatly appreciated so that I can buy the appropriate sender. Thank you

Answers

January 06, 2011
Shane
Speedway Motors does not have any data on the ohm range for that fuel gauge. If you have your original fuel tank and sender you can check the range with a ohm meter. To check the ohm range hook one lead to the wiring stud and the ground lead to the body of the sending unit. Next, move the float from empty to full that will show the ohm range.
1 answers

What size is the mounting flange?

Chris D.
Oklahoma City, OK
September 28, 2011

What size is the mounting flange?

Answers

September 30, 2011
Jason
The flange is 2.593" od. Flange is .127" thick. Bolt holes are 1.250" apart
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How deep is your tank?
Measure the depth of your tank where the fuel sender arm will be located. Choose the sender with an operating range which includes that dimension.

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Most fuel gauge senders attach with a 5-screw pattern. 2 of these screws are farther apart than the other 3. Position yourself such that the 2 wider-spaced holes are closest to your chest; a right side sender will have the arm (or "float") extending to your right, and a left side sender will have the arm extending to your left. This only matters when replacing an existing sender. A first-time installation can use either one, just drill the mounting holes accordingly.

LH/RH Swing Guide (Link) 

OHM
The OEM’s used several different resistance ranges for fuel level indication over the years. However, some of the aftermarket gauge manufacturers follow the common Stewart Warner values (240 ohm empty – 33 ohm full). The gauges and senders that we carry (385 & 391’s) use these standard Stewart Warner values.

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How deep is your tank?
Measure the depth of your tank where the fuel sender arm will be located. Choose the sender with an operating range which includes that dimension.

Right or Left-swing arm?
Most fuel gauge senders attach with a 5-screw pattern. Two of these screws are farther apart than the other three. Position yourself such that the 2 wider-spaced holes are closest to your chest; a right side sender will have the arm (or "float") extending to your right, and a left side sender will have the arm extending to your left. This only matters when replacing an existing sender. A first-time installation can use either one, just drill the mounting holes accordingly.

LH/RH Swing Guide (Link)

OHM
The OEMs used several different resistance ranges for fuel level indication over the years. However, some of the aftermarket gauge manufacturers follow the common Stewart Warner values (240 ohm empty, 33 ohm full). The gauges and senders that we carry (385 & 391’s) use these standard Stewart Warner values.

Ohms Chart (Link)

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How deep is your tank?
Measure the depth of your tank where the fuel sender arm will be located. Choose the sender with an operating range which includes that dimension.

Right or Left-swing arm?
Most fuel gauge senders attach with a 5-screw pattern. Two of these screws are farther apart than the other three. Position yourself such that the 2 wider-spaced holes are closest to your chest; a right side sender will have the arm (or "float") extending to your right, and a left side sender will have the arm extending to your left. This only matters when replacing an existing sender. A first-time installation can use either one, just drill the mounting holes accordingly.

LH/RH Swing Guide (Link)

OHM
The OEMs used several different resistance ranges for fuel level indication over the years. However, some of the aftermarket gauge manufacturers follow the common Stewart Warner values (240 ohm empty, 33 ohm full). The gauges and senders that we carry (385 & 391’s) use these standard Stewart Warner values.

Ohms Chart (Link)
Installation Instructions (PDF)

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