Wehrli Custom Fabrication Cummins 4" High Mount S400 Down Pipe - WCF100262

🔥 Wehrli 4" High Mount S400 Downpipe for Cummins – WCF100262

Precision Fit for High Mount S400 Setups on 2nd Gen Style Manifolds

Take your Cummins build to the next level with the WCFab 4” Turbo Downpipe, engineered specifically for high mount S400 turbos paired with a 2nd Gen style exhaust manifold. Whether you're chasing power or refining your custom twin setup, this pipe delivers the fit, flow, and durability serious builds demand.

✅ Key Features:

🛠️ 4" Turbo Down Pipe for Cummins
Specifically built for High Mount S400 turbos on 2nd Gen style exhaust manifolds.

📏 Upper Flange – 4.6” Diameter
Perfectly matches the S400 T6 exhaust housing, ensuring a leak-free connection under load.

🔩 Factory-Style Lower Flange
Connects to your OEM v-band flange using your factory v-band clamp — no cutting or welding needed.

🔥 High-Temp Ceramic Coated
Ready to handle extreme EGTs while keeping under-hood temps in check and improving longevity.

🧯 Includes Heat Wrap + Hose Clamps
Reduce heat soak and protect surrounding components — wrapped and clamped for a clean finish.

🔧 Includes 4” V-Band Clamp for Turbo Connection
Everything you need to bolt it up and let it eat.

📦 Compatible with 2003–2004 Cummins
Fits early 5.9L trucks that have upgraded their front pipe to the 2004.5–2007 style part.

📦 Product Details:

• Part #: WCF100262

• Fits: High Mount S400 on Cummins w/ 2nd Gen manifold

• Finish: High-temp ceramic coated

• Clamp: 4" V-band included

• Install Time: ~1 hour with standard tools

💯 100% Authentic | 🔥 Track-Proven Quality | 🛠️ Diesel Fabrication Ready