ATI Performance Products ATI918039 Super Damper Serpentine Harmonic Balancer SFI - 6.780 6-Groove 18.1

The ATI Performance Products ATI918039 Super Damper is a high-performance serpentine harmonic balancer engineered specifically for Ford 4.6L 3-valve modular engines. This patented damper design effectively eliminates destructive torsional crankshaft vibrations, allowing your engine to produce maximum horsepower and torque while protecting critical internal components.

Key Features:

• 6.780-inch outside diameter aluminum shell with steel hub construction
• 6-groove serpentine pulley for OEM-style accessory drives
• Elastomer-based damping system for superior vibration control
• SFI 18.1 certified for competition use
• Laser-engraved 360-degree timing marks for precise tuning
• Black zinc chromate finish for corrosion resistance
• Internal balance design with single keyway
• Lightweight aluminum construction reduces rotating mass

The ATI Super Damper utilizes a proven elastomer design that absorbs harmful crankshaft harmonics across the entire RPM range. The 6-groove serpentine configuration maintains compatibility with stock accessory drive systems while providing the performance benefits of a professional-grade damper. Shell weight is approximately 4.5 lbs with average hub weight of 2.9 lbs. Hardware not included—must be purchased separately.