1982 - 1992 Ford 302 (5.0L), externally balanced - 34oz. counterweight on harmonic balancer.Engine Harmonic BalancerFluidamprFluidampr Performance DamperHarmonic BalancerHarmonic Balancer - Fluidampr - External Balance - 50 oz - Steel - Black Zinc - SFI 18.1 - 6-5/8 in O.D. - Ford Small Block - EachHarmonic Balancer - Fluidampr - Ford Small Block - Eachharmonic, Balancer, balancer, fluidamprProtect your engine. A Fluidampr performance damper provides premium, broad range control of destructive crankshaft torsional vibration for optimum performance and durability. 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 components. Features high quality, long lasting viscous silicone damper technology with precision CNC machined and computer balanced high-grade steel components. No tuning or maintenance required. SFI 18.1 approved, race proven for over 25 years. Made in the USA.