Stainless Steel HPX for Ford 7.3L 99-03
The Stainless Steel High Pressure Crossover is meant to allow excess oil pressure to flow between both heads allowing for better supply to the injectors. By allowing the oil the flow to the opposite head, the issue of pressure spikes are less.
HPx line comes with adapters, ready to install.
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HPX
Definitely an improvement
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Awesome
This made my cackle more or less injector cackle disapear. looks nice and clean installed.
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HPX
Relatively easy to install. It's easier if you remove the intake spider. I went through a couple of O-rings when torqueing down to the provided specs. I emailed Riffraff and they sent me a 4 pack at no charge. Torqued it down just shy of the specs and no leaks! Awesome quality as usual from Riffraff. Super fast shipping too!
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HPX 99-03 oil crossover 7.37
You would have to first excuse any and all offensive language to start but I have to say I have been ordering stuff for my 2001 Ford F-250 7.3 and I have to say with all of my kids I have that make it fast as hell already I have to say that the HPX is bad ass... like my truck is 90% quiter by far inside the cab and out just an amazing product y'all should give your self props.. I received it 06-19-2019 today and had it installed in no time and am super happy with the results. In fact my girlfriend asked me how my day went and when I asked about here I had to multi task and listen to her and in fact I was listening to the truck and pointing out to her how quiet it was... it's the small things that make me happy and she liked that I was happy and truly am amazed by this product.. I rate this a full on 10 and a part all 7.3's should have its a must.. awesome" and the stickers and magnets and the pen are another small thing that makes ya happy it's a lil extra gift.. thanks Guys.
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Hpx
Great quality and value. You will notice that your engine's injectors clater quiets down and a more stable idle.
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Hpx
Easy install and fast shipping. And it did help quite down the engine noise. Recommend this product.
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Oil crossover pipe
Great fit and finish
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HPX line
Riffraff is an easy company to deal with. As advertised - easy to install, appears to be high quality fittings and pipe. Not sure if engine noise level really changed but others have stated they had noticeable difference. '02 F-250 w/62k (original owner) miles.
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Hpx crossover
A very simple install and combined with the Frx crossover my idle is noticeably quieter/smoother.
Highly recommend both!
