Harmonic Balancers

Features:

• Fits 2011-2016 6.6L Duramax
• Reduces destructive torsional vibration
• Helps protect crankshaft and bearings
• Supports improved torque and horsepower
• Viscous silicone damper design
• Protects across broad RPM ranges
• Steel construction for lasting durability
• Computer balanced beyond OEM specifications
• Laser sealed outer housing
• Black zinc finish resists corrosion
• Designed for performance diesel engines
• External balance design

Unlock Smoother Power With Every Mile

Your Duramax works hard every time you put your foot on the throttle, and every combustion event sends powerful forces through the crankshaft. The Fluidampr 830121 Harmonic Balancer is designed to control those destructive torsional vibrations before they can take a toll on critical engine components. That means added protection for your crankshaft and bearings while giving your engine the opportunity to deliver smoother, more consistent power. Additionally, many performance enthusiasts choose Fluidampr because it has been shown to support increased torque and horsepower by reducing unwanted crankshaft harmonics. This makes it an excellent upgrade for trucks running tuners, programmers, or other performance modifications that place additional stress on the rotating assembly. Unlike conventional elastomer dampers that can lose effectiveness over time, Fluidampr uses proven viscous damping technology that continues to perform across a broad RPM range. It is an investment that helps protect your engine while allowing you to enjoy every bit of your Duramax's performance.

Advanced Viscous Technology Built For Serious Diesel Performance

Designed specifically for 2011-2016 GM 6.6L Duramax applications, the Fluidampr 830121 Harmonic Balancer combines precision engineering with long lasting durability. Its internal design features a free rotating inertia ring housed inside a laser sealed steel body, with a precisely measured layer of viscous silicone between the components. Furthermore, both the inertia ring and outer housing are computer balanced to meet or exceed OEM specifications, helping maintain smooth operation throughout the engine's operating range. As torsional vibrations travel through the crankshaft, the inertia ring reacts independently and converts that harmful energy into heat, which is then dissipated through the housing. This design provides effective vibration control across a wide frequency range instead of targeting only a narrow operating window like many factory elastomer dampers. Finished with a corrosion resistant black zinc coating and built from durable steel, this harmonic balancer is engineered to provide dependable performance in demanding diesel applications. The result is a premium component that delivers reliable engine protection while supporting the long term durability of your Duramax.

Fitment: 2011, 2012, 2013, 2014, 2015, 2016 GM/Chevy Silverado 2500HD/3500HD 6.6L Duramax

Notes:

• Designed for 2011-2016 GM 6.6L Duramax applications.
• Manufactured to meet or exceed OEM specifications.
• Recommended for high performance diesel engines with tuners or programmers.
• Helps protect against destructive torsional crankshaft vibrations.
• Uses viscous silicone damping instead of stock elastomer material.
• Designed to protect across a broad frequency range.
• Computer balanced during manufacturing for precise operation.
• Features an external balance design for this application.
• Constructed from steel with a black zinc finish.
• Weighs approximately 24 lbs with an 8-3/8 inch outside diameter.