ATI Performance Products ATI918571 Super Damper Harmonic Balancer

The ATI Performance Products ATI918571 Super Damper is a high-performance harmonic balancer engineered specifically for Buick V6 and V8 engines (not compatible with 430 or 455 engines). This premium crankshaft damper features a 6.325-inch outside diameter steel construction designed for dry sump oil system applications.

Key Features:

• Patented elastomer construction with 3-ring design for superior torsional vibration dampening
• Steel outer shell and hub with internal inertia weight system
• SFI 18.1 certified for NHRA and IHRA competition use
• Laser-engraved 360-degree timing marks for precise tuning
• Black zinc chromate finish for corrosion resistance
• Six crankshaft pulley bolt holes with single keyway design
• 3.200-inch bolt circle pulley mount configuration
• Tunable and rebuildable design for long-term performance

This Super Damper effectively eliminates harmful torsional crankshaft vibrations that can damage high-performance engines. The computer-machined grooves retain specially-selected O-rings that are dyno-tested for each application, ensuring optimal performance across all RPM ranges. The steel 3-ring shell weighs approximately 6.00 lbs, while the steel hub averages 2.4 lbs. Mounting hardware is not included and must be purchased separately.