PPE REPLACEMENT HIGH FLOW UP-PIPES 116121115 | 2011-2016 6.6L Duramax LML

Replace the cracked or leaking factory up-pipes on your 2011–2016 GM 6.6L Duramax with the PPE 116121115 Replacement High-Flow Up-Pipes. Designed as a direct bolt-in replacement, these premium up-pipes improve exhaust flow while delivering the durability needed for towing, daily driving, and high-performance applications.

Constructed from heavy-duty 11-gauge T304 stainless steel, these 2-inch outside diameter up-pipes are engineered to withstand extreme exhaust temperatures and pressures. The internally sleeved stainless steel bellows provide exceptional strength and reliability while accommodating engine movement and thermal expansion. By reducing exhaust restriction, these high-flow up-pipes help improve turbocharger response, lower exhaust gas temperatures, and reduce backpressure.

Installation is straightforward thanks to the direct-fit design, and all necessary gaskets are included for added convenience.

Features:

• Direct bolt-in replacement
• 2-inch outside diameter high-flow design
• Constructed from heavy-duty 11-gauge T304 stainless steel
• Internally sleeved stainless steel bellows
• Reduces exhaust backpressure
• Promotes quicker turbocharger spool-up
• Helps lower exhaust gas temperatures (EGTs)
• Designed for high-temperature, high-pressure applications
• Includes installation gaskets

Fitment:

• 2011–2016 Chevrolet Silverado 2500HD/3500HD 6.6L Duramax LML
• 2011–2016 GMC Sierra 2500HD/3500HD 6.6L Duramax LML