TSB: THETA ENGINE SERVICE KIT - This bulletin provides the procedure to install the Theta Engine Service Kit on 21101 2GK05QQKR and 21101 2GK07QQKR engines for 2011-2013MY Optima (QF, TF) and Sportage (SL) vehicles. Due to process changes, certain components of these assemblies were not installed during the manufacturing process. Follow the procedure in this bulletin to install the listed components during the engine replacement procedure outlined in related bulletins (SC147, PI1803W/3, etc.).