This TOPRAN crankshaft pulley bolt (part code 701 617) is designed to reliably secure the crankshaft pulley to the engine's crankshaft. A properly functioning crankshaft pulley is essential for maintaining engine timing and driving various accessories such as the alternator, power steering pump, and air conditioning compressor. This bolt is manufactured to meet specific tolerances, ensuring a tight and secure fit, which is critical for preventing pulley slippage and potential engine damage. Choose TOPRAN for dependable engine components that contribute to the smooth operation of your vehicle.