Application Compatible for GMC Sierra compatible for Silverado 2500 3500 6.6LLB7, LLY, LBZ, LMM, LML compatible for Duramax 2001-2016 Compatible for Chevy Sierra compatible for Silverado 2500 3500 6.6LLB7, LLY, LBZ, LMM, LML Duramax L 2001-2016 compatible for Chevrolet Sierra compatible for Silverado 2500 3500 6.6L LB7, LLY, LBZ, LMM, LML Duramax L 2001-2016 Specification Interchange Part Number:for 116 120 000 116120000 Package Included: 2x Up Pipe 4x Gaskets 12x Bolts Accessories: You will get exactly as shown in the picture above Description: Condition: New Warranty: one year for any manufacture defects Note- Please allow 0.5-1 inch difference due to manual measurement - Professional installation is highly recommended (No Instruction Included) - For any needs please contact us.