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Instrument Panel Fuel Gauge (6 volt)
Fits 41-64 MB, GPW, CJ-2A, 3A, 3B

Part # 640763

New Instrument Panel Fuel Gauge

Highest quality reproduction available. Works for 6 volt systems and mounts just like original. Comes complete with black face and white needle as well as all mounting hardware.

41-45 MB
41-45 GPW
46-49 CJ-2A
49-53 CJ-3A
53-64 CJ-3B

Part # Price





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1943 GPW. Wiring harness purchased and all wiring diagrams i can find, show two wires to fuel gauge. assume input from circuit breaker is positive, correct? Would input from sender be "S" or negative? And... what is the third post for?

Willys Jeep Parts Tech:
"S" is sender "+" is power thru ignition "-" is ground.

Hi - I purchased this gauge a few years back, but finally getting to the install. Can you confirm which each bolt on the back is for? + , -, sender unit. etc?

Willys Jeep Parts Tech:
It should have a backing that has it all marked. Email to help.

I have a 4-stroke 2-cylinder Lloyd Alexander that i wish to fit a fuel gauge into. Will this unit and its appropriate sender unit 670694 be suitable to use? Thank you.

Willys Jeep Parts Tech:
Its possible but Im not familiar with that engine.

having an issue with my fuel gauge. i am running a 6 volt system. all new wiring , new sending unit and gauge all from you guys. sending unit oms out from 0-130 so it seems to be working correctly. center wire from sending unit 6v from ignition and a ground. i see some kind of adjustment on the gauge. what is that for?

Willys Jeep Parts Tech:
That is for fine adjustment of your needle Email and we can help out.

I have a fuel gauge 640763 which I got from you. Will it work on a positive earth electrical system

Willys Jeep Parts Tech:
They were all originally negative ground. You would have to test it on a meter to see by itself if it does.

what is the ohms range.. ? I need to know that to ensure it is compatible with a sender i also need to buy .. best would be 73 ohms empty and 10 ohms full .. but if i know what it is .. i may be able to also buy a compatible sending unit. please advise

Willys Jeep Parts Tech:
8-1/2 - 10-1/2 FULL 70-80 EMPTY

I purchased the 640763 fuel gauge for my 52 CJ3A it reads fine with the engine not running but when you start the engine the reading goes up I have tried grounding it and it didnt help the original gauge worked fine but jooked bad any ideas on what to do know ? Brent

Willys Jeep Parts Tech:
Please test your sending unit with an Ohms reader. Let me know. Call and ask for Mike M. Happy to help out.

I received the gauge and the wiring terminals are + , - , and S. I understand the + & - but would like confirmation that the S terminal is for the lead from the sending unit.

Willys Jeep Parts Tech:
S is for sending unit.


Willys Jeep Parts Tech:
7-9 Full and 130-140 Empty

i need a 6 volt temporary gauge for my 51 chevy 6 volt will this work ?

Willys Tech:
Im sure it could be made to work.

I have an original/restored '34 Ford. Sick of not knowing my gas level. Old liquid in original drys out. Will this gauge work in my 6 volt system. Does this price include sending unit? If not is one available with this gauge and how much? Thank you.

Willys Tech:
This is a 2 gauge. The sending unit for this is part number: 640694

will this work in 1950 jeepster?

Willys Tech:
Im sure with modification it would.
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