2013 Kia Optima EX, Hybrid EX, Hybrid LX, LX, SX, SXL 2.0L L4 - Gas, 2.4L L4 - Electric/Gas, 2.4L L4 - FULL HYBRID EV-GAS (FHEV), 2.4L L4 - Gas. 2012 Kia Optima EX, Hybrid, LX, SX 2.0L L4 - Gas, 2.4L L4 - Electric/Gas, 2.4L L4 - FULL HYBRID EV-GAS (FHEV), 2.4L L4 - Gas.
