Garrett PowerMax GT3788VA Stage 1 Turbo 04-07

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Garrett PowerMax GT3788VA Stage 1 Turbo 6.0L Powerstroke (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



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  • 5
    The best upgrade on any 6.0 Ford Turbo

    Posted by Unknown on Jul 30th 2018

    Great hp&tq gains with a tuner bar none!

  • 3

    Posted by Unknown on Jun 19th 2018

    Love the sound, but hate the lag. Seems to give better hp @ tq. But the lag in spooling up is the reason for the average review. A tune or a more open exhaust would probably give me what I expected but not able to justify the added experience.

  • 5
    Great turbo and price

    Posted by Hawks Diesel LLC on May 29th 2018

    Nice performance upgrade that bolts in like a stock turbo, cant beat the price!

  • 5
    GT3788VA stage 1

    Posted by M&M SERVICE AND SALES INC on May 22nd 2018

    Riffraff is the only way to go

  • 5
    Garrett PowerMax GT3788VA Stage 1 Turbo 04-07

    Posted by Unknown 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!

  • 5
    Bad ass

    Posted by Joe T on Mar 1st 2018

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

  • 5
    great product

    Posted by gerald on Dec 1st 2017

    great product quick shipping

  • 5
    Powermax Turbo

    Posted by 6.0 fighter 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

    Posted by ANDREW 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.