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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Quality
This is very well made(like everything riff raff has). Install was a breeze and made a noticable difference to me in the smoothness of the engine.
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SS HPX 99-03
Excellent product; easy to install; makes the engine purr…!
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Oil cross over
Very satisfied. Runs smoother, better acceleration
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Cross over
Great product but the cost of shipping to Australia $56 item to $204 is extreme was going to purchase kc 300 turbo, not any more
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HPx
Installation is a cinch makes a noticeable difference in the higher pitch "cackle". Super easy totally worth it!
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Longevity
Works great but a year later and I have to replace the prongs on it because they started leaking
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Crossover
Easy to install. Quality part. Great price. Highly recommend Riffraff Diesel.
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oil crossover
fit was perfect and install was simple
definitely made a difference in the injector noise
first tank through i got almost 1 mile per gallon better
why Ford didnt put crossovers in stock escapes me
made in America would have got the extra star -
Really smooths out the engine
Installed the HPX while changing the HPOP orings out and cleaning up the boots and valley. There is a very noticeable difference in the noise and smoothness of idle.
