Product Details: 2001-2005 Chevrolet Silverado 2500 HD / 3500HD 6.6L Duramax LB7/LLY 2001-2005 GMC Sierra 2500 HD / 3500HD 6.6L Duramax LB7/LLY Core Length (in): 37 1/2 (in) Core Material: Aluminum Core Thickness (in): 1 7/8 (in) Core Width (in): 18 3/8 (in) Hazardous Material: No Inlet Tube (in): 3 Outlet Tube (in): 3 Tank Material: Aluminum.
