Harmonic Balancer 6 3/4" D X 2 3/8" W Replacement for Chevrolet GMC Pickup Truck Van Oldsmobile Pontiac 8 cyl 12551537 Superior aftermarket Harmonic Balancer to help absorb vibrations to the crankshaft Built with integrity and durability to hold up against the damage of salt, heat and ozone OE Style: High quality steel construction ensures the balancer will install and function properly Precision engineering and design for reliable, strong performance at any engine speed Fits a variety of GM models like Corvette, Malibu, Firebird & C/K Pickups, G Series Van + more