Select your vehicle

              Your vehicle selection:
              Close
              (0) items
              You have no items in your shopping cart.
              Shop By Category
                settings
                filter_list
                Manufacturer: Fluidampr

                Fluidampr 551221 - Performance Damper

                $507.45
                $597.00
                Fluidampr Harmonic Balancer
                SKU: FDR-551221
                Availability: In stock
                (For in-store pick-up or special order items, please call us at (703) 257-1728 to confirm availability)
                Fitment:
                Please Select Vehicle To Confirm Fitmenteditedit...
                Fitment Notes:
                Ships: within 24-48 hrs

                Fluidampr Engine Dampers are designed to control destructive vibrations which are transfered thru the crankshaft.

                Each time the air/fuel mixture inside a cylinder is ignited, the combustion that occurs creates a torque spike that is applied to the crankshaft through the piston and rod. This torque spike is so severe that it not only turns the crankshaft, it actually twists the crankshaft ahead of its normal rotation and then the crankshaft rebounds. This twisting action is known as torsional vibration. When these torque spikes and forces get into phase with the natural frequency, critical torsional harmonic vibrations occur and can be seriously destructive to the bearings and the crankshaft. Dampers are designed to control those destructive vibrations.

                Critical harmonic vibrations occur numerous times in a engine’s operating range. Stock rubber and elastomer-type dampers are frequency sensitive “tuned absorbers”, and work at only one critical frequency. In the case of a stock rubber damper, it is tuned for a factory engine’s critical harmonic vibrations. If you change the mass of pistons, rods, or the crankshaft, you change the natural frequency of the crankshaft assembly; therefore, the stock damper is no longer tuned to the new frequency of vibration, and you may be headed for early failure of expensive engine components. Dampers also create heat while they work, and rubber is a poor dissipator of heat. This heat and the exposure to the elements deteriorates rubber, causing it to crack and change durometer, which then leads to inertia ring slippage, damper failure, uncontrolled torsional vibration, and costly engine parts breakage.

                Fluidampr Engine Dampers are designed to control destructive vibrations which are transfered thru the crankshaft.

                Each time the air/fuel mixture inside a cylinder is ignited, the combustion that occurs creates a torque spike that is applied to the crankshaft through the piston and rod. This torque spike is so severe that it not only turns the crankshaft, it actually twists the crankshaft ahead of its normal rotation and then the crankshaft rebounds. This twisting action is known as torsional vibration. When these torque spikes and forces get into phase with the natural frequency, critical torsional harmonic vibrations occur and can be seriously destructive to the bearings and the crankshaft. Dampers are designed to control those destructive vibrations.

                Critical harmonic vibrations occur numerous times in a engine’s operating range. Stock rubber and elastomer-type dampers are frequency sensitive “tuned absorbers”, and work at only one critical frequency. In the case of a stock rubber damper, it is tuned for a factory engine’s critical harmonic vibrations. If you change the mass of pistons, rods, or the crankshaft, you change the natural frequency of the crankshaft assembly; therefore, the stock damper is no longer tuned to the new frequency of vibration, and you may be headed for early failure of expensive engine components. Dampers also create heat while they work, and rubber is a poor dissipator of heat. This heat and the exposure to the elements deteriorates rubber, causing it to crack and change durometer, which then leads to inertia ring slippage, damper failure, uncontrolled torsional vibration, and costly engine parts breakage.

                Products specifications
                Bore Dia. Min/Max 1.3780 / 1.3790
                Fitment Vehicle Specific
                Degree Marking Range 1 timing mark
                Degree Markings Yes
                Engine Balance Internal
                Finish Black Zinc
                Keyway Single
                Length 1.67
                Material Steel
                Mounting Hardware Incl. No
                O.D. 5-5/8" (5.625)
                Pulley Size stock
                Rotating Weight 6.1 (4.1 Rwt)
                Safety Rating SFI 18.1