1988 GMC W-Series Harmonic Balancers
- Fluidampr®Harmonic BalancerGMC W-Series 6.5L 1988, Harmonic Balancer by Fluidampr®. Install as an upgrade to OEM elastomer style harmonic balancer, when horsepower is gained, or when rotating assembly parts change to reduce wear on critical internal engine...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$563.55