March 1996-04 4.6L Mustang SFI Approved Underdrive Crank Pulley/Balancer Combo

The March Performance 4.6L Mustang Underdrive Pulley-Balancer Combo has integrated the crankshaft pulley and harmonic balancer into one unit. March fluid dampened harmonic balancers give you the best of both worlds. These one-piece underdrive pulleys replace your old balancer and eliminate the need to "piggy-back" your old damper on top of an underdrive pulley. They are fluid dampened; SFI approved and are dyno proven to produce gains of approximately 12 horsepower!