Fluidampr Harmonic Balancer - Internal Balance - Steel - Black - SB Chevy, 409, 4.3L V6 - 6-1/4" Diameter - 7.9 lbs. Drive Shaft making it a direct bolt-on

making it a direct bolt-on to all vehicles with a shaker hood

Nitro Rockers

is 4-3/8" in diameter

Yellow shields are often used in dawn or dusk driving

Fluidampr Harmonic Balancer - Internal Balance - Steel - Black - SB Chevy, 409, 4.3L V6 - 6-1/4" Diameter - 7.9 lbs. Drive Shaft making it a direct bolt-onProtect your engine. Modifications can compromise your stock harmonic balancer. Install a Fluidampr performance damper early for best durability. Superior viscous damper design controls harmful torsional vibration across the entire rpm range. Reduce wear on engine components. Reduce risk of crankshaft failure. Improve timing. Unleash lost torque and horsepower. Precision CNC machined and balanced high grade steel components. Corrosion resistant black