The Timing Chain Tensioner Holder and Camshaft Holder should remain in place as installed during the removal procedure.If needed, these holders can be reinstalled by following the steps outlined in the removal procedure (Engine/Cylinder Head/ASSEMBLY, Variable Valve Timing/Removal and Installation).This tool set is designed for use with service procedures on vehicles equipped with the 3.6L Upgrade PHEV Engines.Application: 2016 WD – Systems (9 – Engine, 3.6L) 2017 R9, RU, WD, WK – Systems (9 – Engine, 3.6L) 2018 JL, WK – Systems (9 – Engine, 3.6L) 2019 DT, JL, WD, WK – Systems (9 – Engine, 3.6L) Package includes: 2 pieces Timing Holding Tools