If you’ve been hearing a chirping, squealing or screeching sound coming from the Theta II 2.4L GDI I4 engine in your 4th generation (2016, 2017, 2018, 2019 & 2020) Kia Optima, you may need to replace the main drive serpentine accessory belt or the thin stretch belt that joins the crankshaft pulley to the coolant pump. To view my DIY tutorial for the procedure (with the compatible replacement part numbers), click on the text link or thumbnail image below.
2016 To 2020 Kia Optima Serpentine Accessory Belt Replacement Guide
