Genuine BMW Timing Belt

A timing belt is needed to regulate proper synchronization between the revolutions of the crankshafts and camshafts, maintaining exact combustion timing while the engine is running. Without it, the out of sync movements of the gears and pistons can cause major damage to the engine. Typically made from rubber with high-tensile fibers, BMW timing belts should be changed every sixty thousand miles to ensure proper engine combustion.