S300 S400 2G Style Swap Piping Kit | 2003-2007 Dodge Ram 5.9 6.7 Cummins

🔥 2nd Gen Style Turbo Piping Kit – Fits 3rd & 4th Gen Dodge Cummins | Stainless Diesel Strength for S300/S400 Turbos

Drastically lower your EGTs, improve drive pressure, and enhance spool-up by converting your 3rd or 4th Gen Cummins to a 2nd Gen-style turbo configuration. Stainless Diesel's 2nd Gen Style Turbo Piping Kit is engineered for performance, reliability, and future twin-turbo expandability—all while delivering faster spool and a cleaner engine bay layout.

Built from CNC-machined flanges and aluminized mild steel, this kit is designed to withstand extreme boost and heat. Unlike kits with rubber or plastic components, ours is battle-tested for long-term durability in real-world diesel builds.

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🧰 Designed for:

• 2003–2007 Dodge Ram Cummins

• Requires 2nd Gen-style 40° angle T4 manifold (sold separately)

• Compatible with S300 and S400-based turbochargers

• 3rd Gen kit configured for S300-style wastegated turbos

• Optional S400 configuration includes 4.62" V-band flange and clamp

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📦 Kit Includes:

• High Flow Flow Boss Cold Air Intake w/ S&B Air Filter

• Pre-Filter Wrap

• Stainless Turbo Blanket

• Braided Stainless Steel -6 High-Temp Oil Feed Line

• Oil Feed Fitting

• Oil Drain Line + Press-In Aluminum Block Fitting & Silicone Hose

• Oil Drain Gasket

• Turbo Gaskets

• Turbo Mounting Studs & Bolts

• V-Band Clamp for Downpipe

• High Torque T-Bolt Clamps

• 3.00" Bead-Rolled Intercooler Pipe

• Silicone Boot for intercooler pipe to turbo side (uses factory boot at intercooler for 2003–2010 models)

• 5.00" Air Cleaner Pipe with IAT Sensor Port

• 4.00" Silicone Boot with T-Bolt Clamps

• 4.00" Aluminized Steel Downpipe

• 1.00" Billet Divided Spacer

• Waterline (for 2003–2005 models only)

• S400 V-Band Cover Option (if selected): Includes Aluminum Elbow, O-Ring & Clamp

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⚠️ Notes:

• Kit requires a 2nd Gen 40° angle T4 manifold (not included)

• HE351 turbos require disassembly to remove clocking pin and our spring gate actuator (sold separately)

• All piping kits are made to order with a 1–2 week lead time

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💬 Why Choose Stainless Diesel?

• Durable, high-strength construction — no plastic or rubber boost tubes

• Twin-turbo-ready layout puts the turbo in the optimal “twin position”

• Faster spool, lower EGTs, and better under-hood serviceability

• Designed, tested, and built in the USA