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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excellent product!
worth every penny!
My old ford 7.3 runs soooo much smoother,
I can feel that its easier on my injectors,
better throttle response, better fuel mileage!
BEST MONEY IV'E EVER SPENT -
HPX crossover
Perfect fit and easy install. Didn’t really notice a difference
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Perfect!
Easy install, dropped right in. Took maybe 20 mins to install. Took about a day but the change in idle smoothness is very noticeable.
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HPx on my 2001 F350
Installation was a breeze. 20 minutes and 2 wrenches. Did quiet down a little.
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high pressure crossover
Product was high quality, fit perfectly, and arrived ahead of estimated date. However, the product did not change a thing on the engine as product was claimed to do. Waste of money.
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Another great product
No fuss ordering/delivery to Australia as with all my parts from Riff Raff.
Quality is excellent and fitting was easy.
Idle quality and noise reduction has improved.
Great product and service Riff Raff. -
Great fit
Great fit and high quality. Over tightened fitting into head with O-ring first time - had to replace o-rings - no problem since.
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Great product
Fitment was great no leaks
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Easy and fast install
This should be everyone's first mod, the truck idles much better and it took me about 20 minutes to install.






