Garrett 766172-5001S PowerMax GT3788R Ball Bearing Turbo Kit

2001-2004 GM 6.6L Duramax LB7
XDP Part Number:
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The Garrett 766172-5001S PowerMax GT3788R Ball Bearing Turbocharger is an upgraded performance turbocharger for your 01-04 LB7 Duramax. Supporting up to an extra 160HP over stock, it provides extra flow, efficiency, and durability while delivering the boost you need on the road or the track
The GT3788R features the advanced GT-Series wheel that ensures top performance, lower back pressure and reduced intake and exhaust gas temperatures. Built with the Garrett exclusive Ball Bearing Cartridge, the GTP3788R provides unbeatable response, efficiency and durability especially at elevated boost levels.

While this turbocharger is suitable as a replacement for factory equipment, it’s recommended that additional fueling upgrades such as aftermarket/custom tuning are installed or already in use. Kit includes all components needed for turbocharger installation. 

  • Supports Up To 160HP Over Stock
  • Dual Ball Bearing Cartridge
  • Includes All Components For Installation

Stock Turbo
Garrett Turbo Kit
279 HP
440 HP
560 Ft-Lbs
808 Ft-Lbs

Note from Garrett regarding shaft play:
When the Powermax turbo is new, or has not operated for a long period of time allowing most of the oil to drain out, the rotating assembly will move more in the radial direction because there is no oil in the center housing. This condition is normal. As long as the shaft wheel spins freely and the wheels don't contact their respective housings, the assembly will function properly.
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