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 Train Operation
• Black Zinc Finish for Durability & Corrosion Resistance
• SFI 18.1 Certified for Racing & Performance Applications

Fluidampr 890101 Specifications

• Material: Steel
• Finish: Black Zinc
• Outside Diameter: 8.375 inches
• Weight: 23 lbs
• Balance: External

Why Upgrade to the Fluidampr 890101?

The 6.6L Duramax is a powerhouse, but stock rubber dampers degrade over time, leading to harmful vibrations that can damage your crankshaft, bearings, and timing components. The Fluidampr 890101 harmonic balancer provides continuous real-time self-tuning, ensuring optimal vibration control at all RPMs and power levels. Whether you're using your truck for daily driving, towing, or high-performance diesel applications, upgrading to a Fluidampr 6.6L Duramax harmonic balancer is an essential investment.

Duramax Performance Truck Owners Love Fluidampr 890101

Many Duramax truck owners report smoother operation, quieter engine noise, and improved longevity after installing the Fluidampr 890101 6.6L Duramax harmonic balancer. Experience the difference in reliability, stability, and power.

Secure Your High-Performance Duramax Damper

Ensure your Fluidampr 890101 stays in place by pairing it with the: Fluidampr 300010 GM Duramax 6.6L High Strength Bolt Kit

Official Fluidampr Installation Guide & Support

• Engine: 6.6L Duramax LB7 | 6.6L Duramax LLY
• Item Number: Fluidampr 890101
• Make: Chevy | Chevrolet | Gm | General Motors
• Model : 2500HD | 3500HD
• Year : 2001 | 2002 | 2003 | 2004 | 2005
• Manufacturer Part No: 890101
• Product Application: All 2001 to 2005 General Motors vehicles with the 6.6L LB7 and LLY 6.6L Duramax diesel engines
• Height: 8
• Width : 16
• Brand: Fluidampr
• FAQ: Will a Fluidampr Viscous Crankshaft Damper help preserve the integrity of my Duramax diesel engine? One of the most costly issues incurred with a Duramax is a broken factory crankshaft. This failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock-powered Duramax engines. The Duramax crankshaft failure occurs near the number one rod journal due to a combination of excessive rpm and uncontrolled torsional vibrations.  Where is the Fluidampr Viscous Harmonic Damper manufactured?  The Fluidmapr product line is an American Made product manufactured in Springville New York at ISO 9001 accredited facility using the latest precision matching components available to make these computer-balanced crankshaft dampers. 
  
• Part Number: 890101
• Manufacturer : Fluidampr
• Product Note: Only the Fluidampr Performance Diesel series viscous harmonic crankshaft balancer can increase the power output level while offering the protection you need at all RPM levels of your 6.6L Duramax diesel.