{"nhtsa_id":10156535,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-04-06","date":"2019-03-19","document_id":"TSBENG201","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"TSB: THETA ENGINE SERVICE KIT - This bulletin provides the procedure to install the Theta Engine Service Kit on 21101 2GK05QQKR engines for 2011-2013MY Optima (QF, TF) vehicles. Due to process changes, certain components of these assemblies were not installed during the manufacturing process.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10156535-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10156535-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10156535","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA","year_from":2011,"year_to":2013,"match":"exact","vehicle_ids":["2011_kia_optima","2012_kia_optima","2013_kia_optima"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}