Garrett PowerMax GT3788VA Stage 1 Turbo 2003

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Garrett PowerMax GT3788VA Stage 1 Turbo 2003 

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

* To ensure accuracy on 2004 models it is recommended that you check your build date. Any truck built prior to 9/29/03 will require a 2003 turbo.  

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  • 2
    Wish I had bought a factory turbo

    Posted by Unknown on Sep 22nd 2017

    Not a fan of this turbo for towing. This is a good turbo to hot rod a truck but its terrible for towing, a least with mine. It has way too much lag and all the power is too high in the RPM range. My EGT's are out of control (1275-1350) when towing if I set the tune to have any reasonable response. If I set it for max EGT of ~1100 then the truck won't get out of its own way due to lag. I also cannot hold speed in high gear when towing. It either likes 50mph or 80 mph but nothing in between . My truck is lifted with stock gearing and 38" tires which certainly adds to the issue but the stock turbo worked just fine for me

  • 5

    Posted by Niko on May 18th 2017

    I bought this a little over a year ago now and its running strong. My only complaint is it is not polished like in the picture. Overall the best deal I could find and super fast shipping. Great product.

  • 5

    Posted by Rourke on May 3rd 2017

    As the Norm you can't beat a NEW Garrett Turbo !! And Riff Raff.

  • 5

    Posted by Unknown on Apr 17th 2017

    Great product, very happy with the outcome! Great service and fast shipping. Riff raff diesel was excellent to deal with!!

  • 5
    Replacement for factory turbo

    Posted by Unknown on Nov 10th 2016

    Ordered turbo at 6:00am wed morning and Thursday afternoon 2:00 pm it was on my porch.impressive response time.well packaged shipping.turbo was a drop in unit no issues and performs as expected.waiting on new tunes to optimize performance.

  • 5
    powermax turbo

    Posted by reconcal on Apr 3rd 2016

    great replacement for the standard turbo on the very good and the price was great,will buy from riffraff again. thanks