The iridium tipped OEM spark plugs in a third generation (2016, 2017, 2018, 2019 & 2020) Kia Sorento equipped with the Lambda II GDI 3.3L V6 engine should be changed every 97,500 miles. Check out my DIY tutorial for changing the spark plugs (with the OEM and compatible replacement aftermarket part numbers) by clicking on the text link or thumbnail image below.
2016-2020 Kia Sorento 3.3L V6 Engine Spark Plugs Replacement Guide
