2019 (DT, JL, WD, WK) - Systems (9 - Engine, 3.6L). 2018 (JL, WK) - Systems (9 - Engine, 3.6L). 2017 (R9, RU, WD, WK) - Systems (9 - Engine, 3.6L). The Timing Chain Tensioner Holder and Camshaft Holder should still be in place as installed during the removal procedure.