Flex Fuel Tank Gas Cap is a direct fit for the following:

2012-2016 Buick LaCrosse
2011-2013 Buick Regal
2013-2015 Cadillac ATS
2012-2013 Cadillac SRX
2011-2017 Chevrolet Caprice
2011-2017 Chevrolet Equinox
2014-2020 Chevrolet Impala
2011-2017 GMC Terrain

Genuine GM Part Number: 23373281