LB7 Stealth Mach 2 (67) Turbo

Our custom-built 67mm compressor wheel is specifically designed to maximize peak power while maintaining a wide, useable powerband. To fit the monster compressor wheel we've developed a unique, OEM appearing, anti-surge ring, which nestles in the factory compressor cover. Matching the class-leading compressor performance meant updating the center section which is fitted with a 360-degree thrust bearing to increase reliability under heavy load transitions. We even updated the wastegate to make sure you have the most amount of power and the quickest spool-up.


With the all-new compressor side and center section put together a turbine wheel and exhaust housing upgrades had to be made. The LB7 Stealth 67G2 features the largest turbine available in an IHI-style (stock LB7 turbo) frame. This dramatically reduces drive pressure and allows for serious power production even at high RPM where the IHI typically falters. Our monster turbine helps you achieve as close to a 1:1 ratio between drive and boost pressure. This not only helps make more power but also manages EGT's under heavy load.

The unique advantage of having our tuning experts work on this turbocharger design can’t be understated. DuramaxTuner’s experience with the particulars of how the Duramax platform responds to tuning adjustments and airflow changes was a crucial component in building you the perfect turbo upgrade.

Building the LB7 Stealth 67G2 meant designing a turbo that's safe to tow reasonable loads with, fun to drive every day, and a class-leading competitor. If you think street-able, clean, stealthy power is cool then this is the turbo for you! We left no stone unturned when engineering the LB7 Stealth 67G2. Our custom profile on the compressor wheel matched to the custom turbine wheel means you get power and drivability.

800 HP Peak Power
Direct fit for
2001 6.6L Duramax 
2002 6.6L Duramax 
2003 6.6L Duramax 
2004 6.6L Duramax
Dyno Proven
Custom Billet Compressor Wheel
Stealth HIGH-FLOW Turbine Assembly
Engineered Anti-Surge Compressor Cover
Stock Appearing 
Quick Spool-Up
Wide Torque Curve
Useable Horsepower
This Turbo is Designed for you if you...

Daily drive your truck
Reliability and Performance are your top priorities
Have a built short block or plan to build your engine in the future
Prefer to simply swap your old turbo out for a new one
Want more power when you need it, but still have excellent street manners
Have installed or plan to install modified injectors
Have installed or plan to install a built transmission
Have installed or plan to install dual Cp3's or stroker Cp3