Power Bond standard replacement harmonic balancers offer the professional engine rebuilder or shade tree mechanic the highest quality product in the automotive aftermarket. Power Bond balancers use a Spheroidal Graphite iron casting which is considered near-steel strength material. Power Bond balancers use both inserted and pressure-bonded rubber that produces rubber strength that is stronger than competitive balancers. Power Bond Premium Replacement harmonic balancers are available for the most popular passenger car, light commercial and four-wheel drive applications.