Injection Nozzle is a direct fit for the following:

2011-2016 Chevrolet Express 2500
2011-2016 Chevrolet Express 3500
2011-2016 Chevrolet Silverado 2500 HD
2011-2016 Chevrolet Silverado 3500 HD
2011-2016 GMC Savana 2500
2011-2016 GMC Savana 3500
2011-2016 GMC Sierra 2500 HD
2011-2016 GMC Sierra 3500 HD