2016 Lexus RC300 Engine: 3.5L V6;. 2017 Lexus RC300 Engine: 3.5L V6;. Compatible Years: 2016 2017. Part Type: Engine Coolant Water Inlet Seal. Engine Coolant Outlet Gasket. Eng Coolant Gasket. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.