Harmonic Damper Balancer SFi Crankshaft 240Z 260Z 280Z 510New SFi approved harmonic balancer for Datsun 240Z, 260Z, and 280Z, 1970 1978 and 510* 68 73. Fits all 1968 83 L series engines. This Sfi damper is designed for higher RPM usage. This is a single groove pulley, so will not work with A C, however it has 2 thread inserts on the front to add a pulley. These balancers have been tested and have the correct fitment onto the crankshaft. This balancer uses belt width, 3 8" (10mm). *L series 4 cylinder engines
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