Purge Valve Tube is a direct fit for the following:

2011-2019 Chevrolet Silverado 2500 HD
2011-2019 Chevrolet Silverado 3500 HD
2011-2019 GMC Sierra 2500 HD
2011-2019 GMC Sierra 3500 HD
6.0L Engines

Genuine GM Part Number: 12658354