The original OEM iridium tipped spark plugs in a fourth generation 2017, 2018, 2019, 2020, 2021 and 2022 Kia Sportage with the Theta II 2.4 liter inline four cylinder engine can last up to 105,000 miles but they should be checked well before that mileage. Take a look at my DIY tutorial for the procedure (with the compatible replacement part numbers) by clicking on the text link or thumbnail image below.
2017-2022 Kia Sportage Spark Plugs Replacement Guide
