ATP Harmonic Balancer - 102355 Part #: 102355 Line: ATP ATP Harmonic Balancer Limited Lifetime Warranty Material: Cast Iron Groove Count: 6 Hardware Included: No Belt Type: Serpentine Degree Markings Included: Yes 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): 1-1/4 Inch Inside Diameter Bore Size (mm): 32mm Show More Show Less