Technically, and legally, only if KIA/Hyundai can show that the aftermarket oil filter was the actual cause of a failure. It would also be against the law if KIA tried to deny warranty on any non-related issues because they used an aftermarket part. That's the whole premise of the Magnon-Moss Warranty Act.Using aftermarket filters (while superior in every possible way to Kia/Hyundai filters) can also give them wiggle room.