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

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#665391A

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

  • Designed to be compatible with all Stewart Warner and Classic Instruments fuel gauges
  • Overall length measures a total of 11"
  • Has a 240 ohm range when empty, and 33 when full
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Arm Swing Side:

Left Side Arm

Right Side Arm

$50.99

/each

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Product Summary

Universal Fit, 15" Overall Length, Height Adjustable

  • Designed to be compatible with all Stewart Warner and Classic Instruments fuel gauges
  • Overall length measures a total of 11"
  • Has a 240 ohm range when empty, and 33 when full
  • Can be shortened to 10.00" if desired
See more details

Key Specs

MFG. Part #391A-F
BrandStewart Warner
Overall Length15"
Ohm Range240 ohms empty, 33 ohms full
Height AdjustableYes
See more specs

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Stewart Warner 391A-F Details

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.

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.

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Stewart Warner 391A-F Specifications

KEY SPECS
MFG. Part #391A-F
BrandStewart Warner
Overall Length15"
Ohm Range240 ohms empty, 33 ohms full
Height AdjustableYes
GENERAL
Bolt Hole PatternSAE 5 hole (2.125 in. bolt circle)
Sold in QuantityEach
NotesCan be shortened to 10.00"

Ratings & Reviews

5

5 Reviews

Overall Assessment

Customers appreciate the product for its ease of installation and satisfactory performance. Notably, it's compatible with a variety of fuel tanks, offering further convenience. Users affirm the quality and practicality, including its matchless price-point. Many customers stated they would repurchase, emphasizing its superiority over competitor options.

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5

5 reviews

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Thank you

5.0

5 months ago

Lou

Ohio

Verified

I wasn't sure exactly how to determine left/right swing. The pics of distinguishing which way I needed truly helped. Without them I would've bought the exact replacement and still had a fuel guauge that didnt work right. :)

Would Recommend

Awesome product made in the USA

5.0

a year ago

Sal

RIVERSIDE, CA

Verified

Paired it up with a Dakota Digital cluster that I purchased from Speedway Motora as well and it worked flawlessly. Thank you guys!

Would Recommend

I would get this again

5.0

4 years ago

Olasgt

Rathdrum, Idaho

Verified

Easy to install, works great

Would Recommend

This fuel sender is exactly what I needed, good buy!

5.0

9 years ago

Mike

McDonough, Georgia

Verified

I'm very happy with my purchase, Thanks Speedway!

Would Recommend

Can't get any easier!

5.0

11 years ago

Mijito1963

Houston , tx

Verified

I used it with Stewart Warner fuel gauge, easy steps to install .my 10in in depth tank. Can't beat the price . Works great!

Would Recommend

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Showing 5 of 5 reviews

Questions & Answers

6 Questions • 6 Answers

need 240-33 ohm, with fuel pick up line. 1956 chevy truck.

by mike

• 8 years ago

1 answer

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What is the size of the float? My tank is very narrow. Thank you.

by Rob

• 10 years ago

1 answer

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will this work with 1989 Ford F250 gauges?

by 8621

• 12 years ago

1 answer

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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

by mike

• 14 years ago

1 answer

View Answer

What size is the mounting flange?

by Chris D.

• 15 years ago

1 answer

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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

by Chevie

• 15 years ago

1 answer

View Answer

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