KiaPartsNow.com offers the wholesale prices for genuine 2015 Kia Optima US Georgia Made parts. Parts like Camshaft & Valve are shipped directly from authorized Kia dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 2.0L - Theta 2, 2.4L - Theta 2. Body: Sedan - 4Door 5P.