OE/OEMpart number : 23323601. for 2017 Buick Regal Base, GS, Premium, Sport Touring 2.0L L4 - Gas, 2.4L L4 - Flex, 2.4L L4 - Gas. for 2016 Buick Regal Base, GS, Premium, Sport Touring 2.0L L4 - Gas, 2.4L L4 - Electric/Gas, 2.4L L4 - Flex, 2.4L L4 - Gas.
