ATI 918624 Super Damper Harmonic Balancer for 2009-2013 Chevrolet Corvette ZR1

Vehicle Fitment

• 2009-2013 Chevrolet Corvette ZR1 (LS9, 6.2L V8)

Features

• 14% overdrive pulley for increased supercharger speed
• Integrated 11-rib serpentine pulley for enhanced belt grip
• Non-removable OEM diameter A/C pulley included
• Eliminates torsional crankshaft vibrations
• Exceeds SFI 18.1 specifications for competition use
• Laser-engraved 360° timing marks for precise tuning
• Constructed with aluminum shell and steel crankshaft hub
• Black zinc chromate finish for corrosion resistance

Specifications

• Diameter: 8.530 inches (216.6 mm)
• Material: Aluminum shell with steel crankshaft hub
• Balance: Internal
• Damper System: Elastomeric
• Underdrive: 14% overdrive
• Timing Marks: Laser-engraved 360°
• SFI Rating: 18.1
• OEM Part Number Replaced: 12580325

Included Components

• 1x ATI 918624 Super Damper Harmonic Balancer

Product Description

The ATI 918624 Super Damper Harmonic Balancer is engineered for the 2009-2013 Chevrolet Corvette ZR1 equipped with the 6.2L V8 LS9 engine. This high-performance damper serves as a direct replacement for the OEM GM harmonic balancer (Part #12580325), ensuring seamless integration with the existing serpentine belt system.

Designed with a 14% overdrive pulley, the ATI Super Damper increases supercharger speed, enhancing engine performance. The integrated 11-rib serpentine pulley provides improved belt grip, while the non-removable OEM diameter A/C pulley maintains compatibility with factory air conditioning systems.

Constructed with an aluminum shell and steel crankshaft hub, the damper features an elastomeric damper system designed to eliminate torsional crankshaft vibrations. The black zinc chromate finish offers corrosion resistance, ensuring durability and reliability.

Certified to SFI 18.1 specifications, this damper is suitable for both street and competition use. The ATI 918624 Super Damper Harmonic Balancer offers a reliable and durable solution for enthusiasts seeking to optimize their engine's performance.