The product is an OEM GM Genuine L5P EGR Bypass Valve and Cooler, which includes part numbers 12688224 and 12641304. This set is designed for specific vehicles and is essential for the proper functioning of the exhaust gas recirculation system.

Fits Sierra 2500 HD, Sierra 3500 HD, Silverado

6.6 LITER DIESEL. 6.6 LITER DIESEL, EGR VALVE & RELATED COMPONENTS,

2017-19. Silverado, Sierra 2500 HD; Diesel. Silverado, Sierra 3500 HD; Diesel. Silverado, Sierra; 6.6L