PPE 2017-2026 GM 6.6L Duramax High Flow Exhaust Manifolds with Up-Pipes
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
Free up your exhaust on your GM 6.6L Duramax with the PPE High-Flow Exhaust Manifold & Up-Pipe Kit. Built to significantly cut exhaust back-pressure, this manifold-and-up-pipe system lowers EGTs, accelerates turbo spool-up, and improves turbo efficiency and fuel economy — all while maintaining reliability.
Why Choose the PPE High-Flow Manifold & Up-Pipe Kit?
- Lower Back-Pressure – Significant reduction in exhaust back-pressure for better flow.
- Lower EGTs & Faster Spool – Drops exhaust gas temperatures, speeds turbo spool-up, and improves turbo efficiency and fuel economy.
- Sil-Moly Cast Iron Manifold – High-sil moly cast iron construction built for high-heat durability.
- Free-Flow 304 Stainless Up-Pipes – Two-inch up-pipes with internally sleeved bellows in aircraft-grade 304 stainless, with increased inner diameter for higher flow.
- Factory Heat Shield Compatible – Up-pipes work with your factory heat shields.
- Complete Hardware Package – Includes high-temp coated exhaust manifold gaskets, upper and lower up-pipe gaskets, and manifold bolts, studs, and spacers.
- 3-Year Limited Warranty – Backed by PPE.
Kit Includes
- PPE High-Flow sil-moly cast iron exhaust manifold
- Two-inch 304 stainless up-pipes with sleeved bellows
- Exhaust manifold gaskets with high-temp coating
- Upper and lower up-pipe gaskets
- Manifold bolts, studs, and spacers
Specifications
- Part number: 116112500
- GTIN: 840171209082
- Reference: D-701-36
- Manifold material: high-sil moly cast iron
- Up-pipe material: aircraft-grade 304 stainless steel
- Up-pipe diameter: 2" (increased inner diameter, internally sleeved bellows)
Key Features at a Glance
- Sil-Moly Cast Manifold - High-heat durability.
- 2" 304 Stainless Up-Pipes - Higher flow, sleeved bellows.
- Lower EGTs, Faster Spool - More efficient turbo.
- Complete Hardware Included - Gaskets, bolts, studs, spacers.
- 3-Year Warranty - PPE-backed.
Notes
- Ceramic coating option: an optional ceramic coating is available for the High-Flow manifold. It creates a thermal barrier that resists heat absorption to further reduce surface temperature and EGTs, and adds long-lasting protection against moisture, road salts, oil, fuel, and other corrosives. Confirm the correct part number for the ceramic-coated configuration.
- Complete the upgrade with a PPE 3-inch 304 stainless steel down pipe (sold separately).
SKU: 116112500
Questions? We're Here to Help.
Have questions about upgrades for your Duramax? Contact FASS Motorsports and we'll get you dialed:
Phone: 636-429-7020
Email: info@fassmotorsports.com
