POWERBOND RACE 20% UNDERDRIVE BALANCER FOR HOLDEN CAPRICE WL WM WN ALLOYTEC SIDI LY7 LLT LFX 3.6L V6The Powerbond Underdrive balancer produces more horsepower by reducing parasitic power loss from driving engine accessories including alternator, air conditioning, water pump and power steering at high engine RPMs. This small and light weight harmonic balancer sharpens throttle response and allows the engine to rev out faster. Specifications: Type: 6PK Contents: 1 X Harmonic balancer Vehicle Fitment Guide