ATP Harmonic Balancer - 102464 Part #: 102464 Line: ATP ATP Harmonic Balancer Limited Lifetime Warranty Material: Cast Iron Groove Count: 6 Hardware Included: No Belt Type: Serpentine Pulley Diameter (in): 6-1/8 Inch Pulley Diameter (mm): 155mm Degree Markings Included: No Number Of Bolt Holes: 0 Bore Type: Smooth Number of Integrated Pulleys: 1 Balancer Type: OE Replacement Balancer Style: Grooved New Keyway Included: No Inside Diameter Bore Size (in): 1-7/16 Inch Inside Diameter Bore Size (mm): 37mm Show More Show Less