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  Topic Review (Newest First)
09-04-2019 09:23 PM
mad_max0204 I also have a 2004 with a second half 2003 build date. My HPOP works and there are no issues but since I'm going to swap an oil cooler to BPD I was thinking about upgrading/changing the HPOP too.
I've read that Adrenaline HPOP from Dieselsite solves all problems with HPOP but its really expensive ($1000+). Any comments on that? Should I stick to the OEM one until it dies and replace it with another OEM one?
I'm trying to do preventive updates as I need this vehicle to be as dependable as possible.
07-14-2019 09:01 AM
G8orFord There is no STC fitting on the '03-'04 HPOPs as you said. If it's an early '04, there's also no standpipes or dummy plugs. Late '04s had them along with the wavy oil rails. The early pumps are not as robust as the '05+ pumps and are a bit more subject to failure. Monitoring the pressures will help diagnose a problem, but not necessarily the cause. If you're having a problem, an air test will help pin down the problem.
07-14-2019 04:10 AM
Woody6oh When I had my early 04 it was a 03 motor it doesn't have the stc fitting never had a problem with it but stand pipes Orings will cause issues or dummy plugs due to Orings falling the newer engine has taflon type Orings , other then that their is 2 type of pumps for your style and the 05 ND up size and ECT.. newer wont fit in your truck due to lid plate all symptoms include Crank no start.... Man I don't miss my 6.0
06-30-2019 06:46 PM
2004 HPOP

I am slowly learning about my 6.0. I have learned that there is no STC fitting in the 2004 HPOP. My question is there a weak link in the HPOP on the 2004? I guess the HPOP is prone to failure or wear. So by monitoring this pressure and you see failure as the pressure drops over time? If it does fail what is the upgrade or is there one?
Thanks so much I love this forum. Has saved me a ton.

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