PPE 116112500HD High Flow Raw Exhaust Manifolds & Up-Pipes Package | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

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
• Raw finish adds an aggressive appeal
• 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

Durable Manifold and Up-Pipe Package for GM Duramax

If your L5P Duramax is still breathing through stock manifolds and up-pipes, there’s power on the table you haven’t tapped into yet. The PPE High Flow Raw Exhaust Manifolds & Up-Pipes Package is a purpose-built upgrade for serious truck owners who want more response, lower EGTs, and rock-solid reliability, without diving into extensive modifications. This kit ditches the restrictive factory setup in favor of high-sil moly cast manifolds and internally sleeved 304 stainless steel up-pipes. These aren't just stronger, they’re built to move exhaust gases faster and more efficiently, helping your turbo spool quicker while keeping exhaust gas temperatures in check under load. Whether you're towing, hauling, or just looking to squeeze more performance from your daily driver, you’ll feel the difference in both throttle response and driveability.

Direct Replacement Upgrade

The raw finish on the manifolds gives this setup a no-nonsense, aggressive look that complements the rugged aesthetic of any HD build. It’s not coated or polished, it’s a raw, work-ready finish that tells the world your truck is built for performance over polish. And behind that industrial vibe is the kind of strength and heat resistance that keeps your truck running cooler and cleaner through heavy use. Designed as a direct-fit replacement, this PPE manifold and up-pipe package bolts up to most L5P Duramax platforms with minimal hassle. It comes with everything you need for installation, and no tuning is required, just bolt it on and go. The fitment is dialed in, and PPE’s reputation for precision machining and material quality means you can trust it to hold up, mile after mile.

Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Fits 2017–2025 Chevy Silverado and GMC Sierra 6.6L L5P
• High-silicon moly cast manifolds built for strength
• Up-pipes feature internally sleeved 304 stainless bellows
• Larger diameter design increases exhaust flow capacity
• Helps reduce EGTs and lower backpressure under load
• Improves turbo spool, throttle response, and fuel efficiency
• Optional ceramic coating adds thermal and corrosion protection
• Raw finish provides a rugged, aggressive appearance
• Direct bolt-on installation with included gaskets and hardware
• Compatible with factory turbo and manifold connections
• 50-state emissions legal with CARB EO approval
• Backed by a 3-year limited manufacturer warranty