Optitorque Technologies Llc Harmonic Balancer Bolt - 14 mm x 1.50 Thread - 4.000 in Long - 19 mm 12 point Head - Steel - Black Oxide - Mopar Gen III Hemi - Each MPN 10644 State Restrictions- Canada Restricted-NO Truck Freight only-NO Air Restricted-NO Note--5.7L/6.1L/6.4L