The iridium tipped OEM spark plugs in the Tigershark MultiAir 2 2.4 liter inline four cylinder engine should last up to 100,000 miles, but they should be checked before that mileage. To view my DIY tutorial for the procedure (with the compatible replacement part numbers), click on the text link or the thumbnail image below.
2014-2018 Jeep Cherokee 2.4L Engine Spark Plugs Replacement Guide
