ATI Super Damper for LS1/LS2/LS3 Wet Sump Corvette, Pontiac G8 GT & GXP, 2014-16 SS Sedan, 10% Underdrive with A/C

Are you looking for maximum engine protection and performance for your serpentine belt application? These ATI Super Damper serpentine harmonic balancers contain grooves for serpentine belts machined into the outer damper shell. The dampers come standard with six outer grooves for standard OEM drive systems. Specifically designed for high-rpm engines, they're tuned to eliminate the harmful crankshaft harmonics that cause parasitic horsepower loss. They're tunable in the field, rebuildable, and extremely efficient at all rpm.

Features:

• Engine Balance: Internal
• SFI Rating: SFI 18.1
• Degree Markings: Yes
• Degree Marking Range: 360
• Outside Diameter (in.): 6.780
• Crankshaft Pulley Bolt Hole Quantity: Three
• Groove Quantity: 6
• Keyway Quantity: One
• Harmonic Balancer Material: Aluminum/Steel
• Harmonic Balancer Construction: Elastomer
• Harmonic Balancer Color: Black zinc chromate
• Mounting Hardware Included: No
• Quantity: Sold individually.
  

Notes:
Ten percent underdriven. designed for use with air conditioning, requires shorter serpentine belt. Weight is 4.50 lbs.