ATI Performance Products ATI918912 Super Damper Harmonic Balancer Cummins Diesel

The ATI Performance Products ATI918912 Super Damper is a precision-engineered harmonic balancer designed for high-performance and heavy-duty Cummins diesel engine applications. Built to address the destructive torsional vibrations generated by modified and high-output diesel engines, this damper helps protect critical engine components while improving overall power delivery.

Key Features:

• Torsional vibration elimination — absorbs and dissipates crankshaft harmonics that accelerate wear on bearings, seals, and rotating assembly components
• Steel construction — heavy-duty steel inner and outer shells with a steel inertia weight for maximum durability in demanding diesel applications
• Three-ring elastomer design — large, replaceable elastomer O-rings provide superior dampening capacity compared to bonded OEM-style or fluid-filled dampers
• Serviceable and tunable — unlike sealed fluid dampers, the ATI Super Damper can be disassembled, inspected, and rebuilt with replacement O-rings
• Laser-etched timing marks — precise timing marks around the outer shell circumference simplify engine tuning and timing verification
• Exceeds SFI 18.1 specifications — black zinc chromate finish for corrosion resistance and a professional appearance
• Heavy-duty diesel rating — engineered specifically for the higher torque loads and RPM characteristics of performance Cummins diesel builds

The ATI Super Damper's non-bonded inertia weight design means it is not susceptible to the silicone congealing failure mode common in fluid-filled dampers. When the elastomer rings eventually wear, they can be replaced at a fraction of the cost of a new damper — making this a long-term investment for serious diesel builds.