Stewart Warner 385B-F L Swing 6-12 Fuel Level Sending Unit 240/33 Ohm
Universal Fit, 2.61" Overall Diameter, 12.00" Overall Length, 5 on 2.20" Bolt Hole Pattern
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Details
Info
Choosing a fuel level sender:
What brand of gauge will you use?
Speedway carries the excellent Stewart Warner brand of fuel senders. They 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. 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.
Ohms Chart (GIF)
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Reviews
Q & A
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Looking to replace your fuel level guage or sending unit? It's important that you have the the right guage for the right sender. Speedway has the tools to make the job easy and ensure you get the right parts the first time.
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Speedway Motors employee Pat O. takes some time to discuss the Fuel Gauge Interface Module that allows you to use any gauge set with almost any fuel level sending unit.
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Troubleshooting a fuel gauge can be a seriously aggravating issue. Click here for a video showing some hints and tips!
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Learn MoreA routine weekly maintenance checklist to perform between each race in order to keep a clean and efficient race car at the track.
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Learn MoreThe process of changing out a mechanical fuel pump in a 1957 Bel Air and some helpful tips while doing so.
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Learn MoreThe process on how to effectively winterize your fuel system in open wheel racing. This includes step by step instructions and recommended parts to use for your fuel system.