The Bullseye Power Drop-in LB7 BatMoWheel for your 2001-2004 GM 6.6L Duramax is a replacement compressor wheel for your stock turbocharger. Its unique design increases spool-up, throttle response and also increases power and efficiency. Features: •61MM Inducer•+36HP Over Stock •Supports up To 605HP •Drop-In Replacement Wheel