4.00" Twin Downpipe - 2G Twin 4"-5" Flange

🛠 4.00" Downpipe for S400 Turbo – Twin Turbo Applications (Non-Returnable)

This 4.00" downpipe is specifically designed for use with S400 turbochargers in twin turbo (compound) configurations. Built for high-flow performance and tight engine bay clearance, it’s an essential component for custom compound diesel setups running an S400 high-pressure charger.

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✔️ Specifications:

• Diameter: 4.00"

• Application: S400 Turbo in Twin Turbo Setup

• Designed to fit Stainless Diesel twin kits or custom twin builds

• Heavy-duty construction for durability under extreme heat and pressure

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⚠️ Important Note:

• This is a non-returnable item – please confirm fitment before purchasing

• Intended for experienced builders and fabricators familiar with compound turbo setups

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💥 Why Choose This Downpipe?

• Smooth mandrel bends for maximum exhaust flow

• Engineered to handle high-boost, high-heat conditions

• Used in Stainless Diesel twin turbo applications