In order to transmit power from the engine to auxiliary systems like the water pump and alternator, the 2016 Kia Optima serpentine belt connects pulleys on each of these systems with one on the engine. That means that these systems will stop working if the belt breaks, which could leave you stranded. Abrasions and cracked or damaged ribs are sure signs of a belt that is on the way out. Browse our selection of 2016 Optima belts to find the right part at the right price.