This engine coolant pipe is designed to match the fit and function of the original pipe on specified vehicles. It is engineered to help ensure leak-free coolant transfer when an original pipe has failed from heat or corrosion. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Chevrolet Express 2500: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016] - [Chevrolet Express 3500: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016] - [Chevrolet Express 4500: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016] - [Chevrolet Silverado 2500 HD: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021] - [Chevrolet Silverado 3500 HD: 2007, 2008, 2009, 2010, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021] - [Chevrolet Silverado 3500: 2006] - [GMC Savana 2500: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016] - [GMC Savana 3500: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016] - [GMC Savana 4500: 2011, 2012, 2013, 2014, 2015, 2016] - [GMC Sierra 2500 HD: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021] - [GMC Sierra 3500 Classic: 2007] - [GMC Sierra 3500 HD: 2007, 2008, 2009, 2010, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021] - [GMC Sierra 3500: 2006]