Distribution Box is a direct fit for the following:

2017-2019 Chevrolet Silverado 1500
2019 Chevrolet Silverado 2500 HD
2019 Chevrolet Silverado 3500 HD
2017-2019 GMC Sierra 1500
2019 GMC Sierra 2500 HD
2019 GMC Sierra 3500 HD

Genuine GM Part Number: 84354721