Fluidampr 890101 01-05 6.6L Duramax Harmonic Crankshaft Damper

Overview Upgrade your 2001 to 2005 Duramax LB7 & LLY engines with the Fluidampr 890101, a viscous harmonic balancer engineered to control destructive torsional vibrations, extend engine life, and improve power output. Whether you're running a stock or high-performance diesel, this damper ensures smoother operation, reduced wear, and better reliability. Fluidampr 890101 6.6L Duramax Harmonic Balancer Applications This direct bolt-on replacement for OEM #97328573 fits: 2001–2004 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LB7 2004–2005 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LLY 2001–2004 Chevy Silverado 2500HD / 3500HD – 6.6L Duramax LB7 2004–2005 Chevy Silverado 2500HD / 3500HD – 6.6L Duramax LLY Key Benefits of Fluidampr 890101 Dyno-Proven Horsepower & Torque Gains Prevents Costly Engine Damage & Repairs Viscous Damper Technology for Superior Torsional Vibration Control Extends Engine Life by Reducing Wear on Bearings & Timing Gear Ensures More Stable Valve