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Fuel Pump Pressure Regulator
Fits 41-71 Jeep & Willys

Part # 12804

New Fuel Pump Pressure Regulator

Ready to install in line regulator between your fuel pump and carburetor. Guaranteed to prevent flooding. Keeps pressure at 1-3/4 psi minimum to 2-1/2 psi maximum.

It will also include proper fittings for inlet and outlet as well as a plug to block off the 2nd output for single barrell carburetors.

The plug goes on one of the outs. The ports go on one in and one out.

4-134 engine
6-226 engine
6-161 engine

41-45 MB
41-45 GPW
46-49 CJ-2A
49-53 CJ-3A
53-64 CJ-3B
55-71 CJ-5
50-52 M38
52-66 M38A1
46-64 Truck
46-64 Station Wagon
48-51 Jeepster

Part # Price





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Do these accept the original steel fuel lines, it do we have to use rubber fuel lines? Is this the only fuel regulator you gave, I remember seeing a chromed single output regulator before.

Willys Jeep Parts Tech:
This is an improvement from the chrome ones we used to have. You could run your hard lines or rubber lines with a fitting and be all set. It can do either.

What are the inlet, and outlet thread sizes.

Willys Jeep Parts Tech:
3/8 line inlet and out.

What fittings connect on the end?

Willys Jeep Parts Tech.:
Depends where your referring to. Please email to help.

Does this fuel pump come 6 volt?

Willys Jeep Parts Tech:
This is an inline fuel pressure regulator.

Can I attach a fuel pressure gauge to the fuel pressure regulator? If so, which gauge do you recommend? And, do you have one for sale? Thank you.

Willys Jeep Parts Tech:
Please email more vehicle information and we can try to help out.

I need to purchase the inline fuel pressure regulator for my CJ3B. Will I also need to purchase item number 802040 to be able to attach the regulator to existing metal gas line?

Willys Jeep Parts Tech:
Ok, we can help. Please give us a call toll free and we can fix you up.

Mike, Just received my rebuilt carb. that you rebuilt. My jeep idles great, but will not accelerate smoothly, definite hesitation while accelerating and some popping . once i'm up to speed it seems to run better. Do I need a fuel pressure regulator or ? Thanks for your help. Jeff 1961 cj5 f134

Willys Jeep Parts Tech:
Could be a timing issue or vacuum issue on the motor. Please call me toll free or email to help.

I’ve been told I need a regulator to help my Solex carb. I know they are placed after the fuel pump, but where on the engine are the the regulators mounted?

Willys Jeep Parts Tech:
There never used one originally. It would just go in line between fuel pump and carb.

Is this fuel pump pressure regulator compatible with ethanol fuels?

Willys Jeep Parts Tech:
Yes, I do believe so. But you always want to run NON-ethanol.

Is pressure regulator installed before or after fuel filter

Willys Jeep Parts Tech:
Typically you want the fuel filter before the fuel pump and they your regulator after the fuel pump.
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