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


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Garrett PowerMax GT3788VA Stage 1 Turbo 04-07

  • Garrett PowerMax GT3788VA Stage 1 Turbo 6.0L
Your Price:
$1,248.44 (You save $497.63)
Part Number:


Garrett PowerMax GT3788VA Stage 1 Turbo 6.0L Power Stroke engine (04-07)

  • Features the Garrett® patented Advanced Variable Nozzle Turbine (AVNTTM) design for increased compressor flow and boost response
  • Utilizes nine movable vanes which significantly increase turbine efficiency and improve engine performance from idle launch through peak torque
  • Patented integral electro-hydraulic actuation and proportional solenoid for infinitely variable control
  • Larger compressor wheel over stock increases maximum power range while keeping turbo speeds down for the same power output
  • Supports up to an additional 175 HP over stock with no sacrifice in drivability
  • Suitable as a performance upgrade or replacement for original equipment
  • Outline interchangeable for a perfect fit each and every time


Model years 2003 (PN 777469-5001s) built 9/29/03 and before, 2004-2007 (PN 772441-5002s) 6.0L Power Stroke engine

*Picture is provided by Garrett/ Compressor housing isn't polished as shown.

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Product Reviews

Showing reviews 1-10 of 35 | Next

  1. Garrett PowerMax GT3788VA Stage 1 Turbo 04-07 5 Star Review

    Posted by on Mar 28th 2018

    Easy install, sounds great even with stock exhaust- I cant wait to get my 4" full flowing exhaust on this week!

  2. Bad ass 5 Star Review

    Posted by on Mar 1st 2018

    Great powerful product, got the sound and power I was looking for, great product... thanks fellas

  3. great product 5 Star Review

    Posted by on Dec 1st 2017

    great product quick shipping

  4. Powermax Turbo 5 Star Review

    Posted by on Nov 20th 2017

    Awesome product extremely more fun than stock and went in as easy,lined up perfectly. Best price I could find anywhere! Only thing I didn't like is the box was really banged up and a big heavy expensive turbo needs better care when shipped!

  5. Awesome product and Excellent CUSTOMER Service 5 Star Review

    Posted by on Oct 31st 2017

    The product is great and the price is the best out there. The customer service from RiffRaff is excellent, I called left message and in a very timely manner returned my call. The call was quick and efficient and I was very happy.

  6. Replaced stock turbo with Garret Powermax 4 Star Review

    Posted by on Jul 6th 2017

    Shipping was very fast and price was unbeatable. I got tired removing my stock turbo and cleaning it every 2 years to clear codes so I replaced it. This turbo whistles non stop and gets people looking. I lost about 8 psi of max boost, but it makes boost lower and faster, 20-21 psi max. Combined with my tune and bolt ons, this truck pulls hard.

  7. 04 powerstroke 4 Star Review

    Posted by on Jul 2nd 2017

    This turbo seems a lot better than the stock one milage is good.Cheaper than Amazon.

  8. Didn't know what I was missing! 5 Star Review

    Posted by on May 25th 2017

    Bought a 2005 F250 and figured there would be some repairs..But when I needed a turbo I searched and found this at RiffRaff. Price was great but their ability to overnight it to me AND answer questions about the install was beyond what I expected! I'm not only a customer for life, I'm and FAN! Thanks to Clay and the whole team at RiffRaff!

  9. Excursion 6.0 5 Star Review

    Posted by on May 16th 2017

    I'm happy with this purchase it arrives fast and it works awesome very happy with the whistle

  10. Best purchase ever! 5 Star Review

    Posted by on Apr 18th 2017

    I'm in love with my powermax turbo! Thank you very much for your honesty. This was shipped less then an hr after I ordered it. Was on my doorstep 2 days later in MN. I paid over $70 for shipping because I needed it quick & was still cheaper than all the places with free shipping! Thanks again & I look forward doing business with Riffraff again.

Showing reviews 1-10 of 35 | Next