HIGH FLOW Exhaust Manifold & Up Pipes For 17-25 Chevy GMC 6.6 Duramax Diesel L5P

• Significant reduction in exhaust back-pressure
• Lower EGTs, better turbo efficiency and fuel economy
• Sil-moly cast iron construction 
• Two-inch Free-Flow up-pipes with sleeved bellows
• Upper and lower up-pipe gaskets included

Includes:

• Driver & Passenger Side Exhaust Manifold Gaskets
• EGR Gasket
• Driver & Passenger Side Up Pipe Gaskets

Fitment:

• 2017-2025 GMC Sierra 2500/3500 6.6L Duramax Diesel L5P
• 2017-2025 Chevrolet Silverado 2500/3500 6.6L Duramax Diesel L5P