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The DFCM does not contain a fuel pump,, it mainly the fuel filter and water separator. The fuel pump is in the tank and has been for many years on most all cars and trucks, gas and diesel now that they are fuel injected.
Guys there is NO fuel pump in the fuel tank. I am certain of this.
DFCM is the only low Press pump. The basket in the fuel tank, has some check valves in the bottom of it and a suction tube and a return tube. Only other thing in there is the sender for the fuel gauge on the dash.
Hope this helps.
I am curious as to why you would want to replace it? Has it given any problems?
It's been getting progressively louder over the past month or so...as soon as I turn the key on now it's a very loud high pitched buzz. Trying to preempt a failure by replacing on my timeline.
I have noticed on my 350 2012 that the lpfp is louder depending on where I get fuel and when the filter change was. When was that last time you changed fuel filters? What mileage do you have on your truck?
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