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Riffraff Diesel Performance Inc, Engines - Supplies, Equipment & Parts, Eagle Point, OR


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Stainless Steel HPX 99-03

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Your Price:
$49.88 (You save $4.25)
Part Number:

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 and allow for a smoother idle. 


Product Videos

How To: Riffraff Diesel Oil Rail Crossover (HPx) (01:25)
How to install the Riffraff Diesel Oil Rail Crossover (HPx) on your 7.3 powerstroke. Purchase: http://www.riffraffdiesel.com/stainless-steel-hpx-99-03/ PDF Instructions: http://www.riffraffdiesel.com/content/RESOURCES/Riffraff%20PDF%20-%20HPX%20Instructions.pdf Fuel Rail Crossover (FRx): https://youtu.be/BuiLWqXkmos
  • How To: Riffra...
    How to install the Riffraff Diesel Oil Rail Crossover (HPx) on...

Fitment Details

Early 1999-2003 7.3 Powerstroke
Does not fit all T4 style turbos.
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Product Reviews

Showing reviews 1-10 of 225 | Next

  1. Oil crossover 5 Star Review

    Posted by on Apr 18th 2018

    Worked great awesome quality!!

  2. Great upgrade for the price 5 Star Review

    Posted by on Apr 15th 2018

    Installed along with the FRX, both noticeably quieted engine down and smoothed up at idle.

  3. Absolutely recommend this product 5 Star Review

    Posted by on Apr 12th 2018

    read about this product for awhile. Bought it and literally installed it in 10min. left everything in place. perfect fit. Honestly i was really skeptical that this would do much but, after I installed it it is a huge difference. Motor isn't necessarily quieter, but it smoothed the idle out considerably. It was actually pretty shocking how much a difference it made in smoothing the idle out. I would really recommend this to anyone with a 7.3... one of the best bang for the buck things i have done on the truck. doing the hutch and harpoon mod next and have the frx, cvd and banjo bolts sitting on the shelf ready to go....

  4. High Pressure Oil Crossover 3 Star Review

    Posted by on Apr 5th 2018

    I noticed the top end of my stock 2002 f350 7.3l was more smooth and quiet than my non-hpXover.

  5. Oil equalizer 5 Star Review

    Posted by on Apr 3rd 2018

    Riffraff quality product that worked well with the EBPV pedestal delete. Bends and routing worked great and smoothed out the idle of my truck.

  6. Noticeable difference. 5 Star Review

    Posted by on Mar 29th 2018

    The HPX really seems to have smoothed out the idle of the truck and runs quieter as well. I would recommend this product to any 7.3 owner.

  7. Excellent Craftsmanship and EXACT FIT 5 Star Review

    Posted by on Mar 26th 2018

    Excellent Design, great materials, and very well fabricated. I'm a working Licensed Mechanical Engineer, and it was a joy to see it, install it, and find it helps as much as people say. USA, as it used to be. My Truck is smoother, quieter, and seems to just run better overall. 2000 F250-7.3L Lariatt, crew cab, long bed that has had pretty good maintenance and upkeep, 179,600 miles.
    Goes together exactly as stated. Very easy to install. Instructions are dead on. Photos very helpful. Once the two separate nipples are installed and torqued as noted, I Fit each receptacle nut loosely and threaded them down evenly on the nipples. Then just a tug of the open end wrench on each and it was done. No oil weeps, just works as advertised. GREAT PEOPLE and Products.

  8. Definitely recommended 5 Star Review

    Posted by on Mar 19th 2018

    Very high quality piece, the bends were perfect and the line basically fell into place. Couldn't have asked for more especially at such a reasonable price.

  9. Only Way To Go 5 Star Review

    Posted by on Mar 16th 2018

    Had a stainless braided line for about 2 months, then it started weeping around the crimps. Decided to try these guys and man what a difference. Been running it for close to 9 months now, no leaks no weeps. Don't waste your time on braided lines like I did.

  10. Did its job perfectly 5 Star Review

    Posted by on Mar 11th 2018

    I installed the oil crossover and started the truck up. It was much smoother at idle and a quieter running motor overall. I would install this part on all 7.3l motors.

Showing reviews 1-10 of 225 | Next