2001-2004 Duramax Twin Turbo Kit (422402)

Industrial Injection compound twin-turbo kit for 2001-2004 Chevrolet Silverado 2500HD/3500 and GMC Sierra 2500HD/3500 6.6L LB7 Duramax. A complete kit built around a PhatShaft 62/65/14 high-pressure charger and a BorgWarner S474 atmospheric charger — fast spool-up paired with the airflow to hold tow EGTs in check and support up to roughly 850 HP.

Intended for towing-and-performance builds or street trucks running into the high power-range. Kit ships complete for install.

• Compound Twin-Turbo Kit — LB7 Specific
• PhatShaft 62/65/14 High-Pressure Turbo
• BorgWarner S474 Atmospheric Turbo
• Fast Spool-Up & Broad Powerband
• Supports 350 HP up to ~850 HP
• Complete Kit for Install
• Part Number: 422402