This is a 50oz fluid damper balancer for Ford 302/351W, 6.50\"D/4.11\"H for \'84 to \'97 5.0 Ford HO motors. It was only used on the engine for a little bit until I changed to a different balancer for a supercharger. It is in excellent used condition.CAT fluid dampers are manufactured from forged 1025 low carbon steel housing and injected with high viscosity silicone fluid. A nylon ring and nylon position guides allow the steel inertia ring a rotation freely inside the housing. The steel inertia ring rotates harmonically with the engine and absorbs the torsion vibration from the rotating assembly at any frequency and RPM. It thus extends the life of crankshaft and bearing and allows the engine to produce more power and torque. All dampers are tested to 12,500 RPM for explosion proof in compliance with SFI 18.1 Specification

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