SKU #: DT-stealthG2 Duramax Tuner Stealth Series G2 64mm Bolt-In Turbo Charger 01-04 6.6L GM Duramax LB7

It's still a direct drop-in, bolt-on stock appearing replacement but with features you won't find anywhere else. The G2 improves power, towing potential and overall performance through the use of a custom designed high flow turbine assembly, 7075 billet compressor wheel, and 360 degree thrust bearings.

The larger turbine assembly allows for lower drive pressure, creating a better balance between boost and drive (exhaust backpressure). This improved balance under heavy load means more efficiency and power at a given boost number, resulting in lower EGT's (Exhaust Gas Temperature) under heavy load. Overall peak power is also improved, where the Stealth 64 G1 would normally support 600-610 HP, the G2 now pushes the envelope to 640HP. You're not going to find all of these features anywhere else in the aftermarket in a truly stock appearing, bolt-in IHI turbocharger.

G2 technology takes the Stealth 64 and improves every element of it - including the sound!

The G2 is designed to take the stock long block LB7 as far as possible with stock connecting rods - that's up to 640 rear wheel horsepower.


The Stealth 64 has been on the market since 2013. The G2 represents everything the team at Duramax Tuner has learned, coupled with their in-house manufacturing and quality control - to bring the Stealth 64 to the next level.