Kia Optima 2016–2018 — technical service bulletin
Bulletin PS608_R1 · NHTSA communication 10176068 · issued May 26, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2018
model years
8
vehicle entries
Official summary
PITSTOP: UPDATED SPARK PLUG FOR 2.0T THETA-II - This bulletin has been revised to include additional information. This Pitstop provides information regarding the updated spark plug for vehicles listed below, equipped with 2.0T Theta-II engines, which may not yet be available in the Electronic Parts Catalog (EPC). If not available, the updated spark plug must be ordered manually. This updated spark plug has been improved with the thread shoulder lengthened to enhance protection of the insulator from combustion heat.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.