Rotational power from the engine's crankshaft is transferred by the 2018 Nissan Versa serpentine belt to power auxiliary systems like the AC system, water pump, and alternator. It's good to keep tabs on belt wear and look out for cracks and abrasions or damaged ribs, as a broken belt obviously can't transfer this power, potentially making your ride undrivable till it is fixed. Browse these replacement 2018 Versa belts to determine which is best for you.