Compare Maximum number of 4 items selected ATP Harmonic Balancer - 102451 Part #: 102451 Line: ATP ATP Harmonic Balancer Limited Lifetime Warranty Balancer Type: OE Replacement Balancer Style: Grooved Material: Cast Iron Belt Type: Serpentine Bore Type: Smooth New Keyway Included: No Inside Diameter Bore Size (in): 1-3/16 Inch Inside Diameter Bore Size (mm): 30mm Number of Integrated Pulleys: 1 Pulley Diameter (in): 5-3/8 Inch Pulley Diameter (mm): 136mm Groove Count: 6 Hardware Included: No Degree Markings Included: Yes Number Of Bolt Holes: 0 Show More Show Less