PPE 116112535 High Flow Silver Ceamic Exhaust Manifolds & Up-Pipes Package | 2017-2025 Silverado/Sierra 2500HD/3500HD 6.6L

Features:

• High-sil moly cast exhaust manifolds
• Internally sleeved 304 stainless up-pipes
• Increased flow for better turbo spool
• Reduces exhaust gas temperatures (EGTs)
• Boosts power, throttle response, and MPG
• Silver ceramic coating reduces heat soak
• Protects against corrosion and road salt
• Improves exhaust efficiency under load
• Built for long-term durability and strength
• Direct-fit design for easy installation
• Compatible with most L5P Duramax trucks
• Includes both manifolds and up-pipes

Premium Manifold and Up-Pipe Package for GM 6.6L Duramax

If you're looking to pull more performance out of your L5P Duramax without compromising reliability, the PPE High Flow Silver Ceramic Exhaust Manifolds & Up-Pipes Package is one of the smartest upgrades you can bolt on. This setup replaces the restrictive factory cast components with free-flowing manifolds and internally sleeved stainless steel up-pipes, designed from the ground up to improve flow, reduce exhaust gas temps, and help your turbo spool faster and harder. At the heart of this system are high-sil moly cast manifolds—engineered for strength, precision, and consistent performance under high heat and heavy load. They're matched with aircraft-grade 304 stainless up-pipes that feature internally sleeved bellows for added durability and longevity. These components aren't just built tough—they're built to move exhaust gases more efficiently, giving your turbo what it needs, when it needs it.

High-Quality Construction & Design

What really sets this kit apart is the silver ceramic coating. More than just good looks, this coating acts as a thermal barrier, minimizing heat soak into the engine bay and preserving exhaust velocity. That means lower EGTs and better overall efficiency, especially when you're towing, climbing grades, or running the truck hard off-road. The ceramic finish also holds up incredibly well against corrosion, road salt, fuel residue, and extreme weather—keeping everything looking clean and performing strong for years to come. Installation is straightforward thanks to the direct-fit design. Everything you need to mount the manifolds to the cylinder heads is included, right down to new gaskets, ARP 12-point fasteners, and assembly lube. Up-pipe hardware is sold separately if you're pairing with PPE’s high-flow downpipe or running your own configuration.

Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM 6.6L Duramax