ATP Harmonic Balancer - 102402 Part #: 102402 Line: ATP ATP Harmonic Balancer Limited Lifetime Warranty Material: Cast Iron Groove Count: 6 Hardware Included: No Belt Type: Serpentine Degree Markings Included: No Number Of Bolt Holes: 3 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 Inch Inside Diameter Bore Size (mm): 26mm Show More Show Less