BMW E46 M3: S54 Rod Bearings & Active Autowerke Equal Length Headers

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After over 200k on the odometer the S54 in this E46 M3 bit the dust and spun rod bearing. Instead of repairing the spun bearing we were able to source a newer S54 to replace the original motor. And so the same thing didnt happen again we bulletproofed the newer engine with a set of VAC Performance Coated Rod Bearings …