S300/S400 Twin Piping Kit '03-'07 5.9

🔥 Stainless Diesel Twin/Compound Turbo Piping Kit – Fits 2003–2007 Dodge Cummins 5.9L (3rd & 4th Gen)

Unlock massive power gains, faster spool-up, and lower exhaust gas temps (EGTs) with the Stainless Diesel Twin/Compound Turbo Piping Kit — designed for 3rd and 4th Gen Dodge Ram 2500/3500 5.9L Cummins (2003–2007). Whether you’re building a 1000+ HP monster or just want the best of both worlds (quick spool and big top-end power), this kit delivers unbeatable airflow, efficiency, and drivability.

Made in the USA with CNC’d flanges, TIG-welded piping, and our 5-layer extreme duty silicone boots, this is the high-boost-ready kit serious diesel builders rely on.

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🛠️ Kit Compatibility:

• Engine: 5.9L Cummins (Common Rail)

• Model Years: 2003–2007 Dodge Ram 2500 / 3500

• Turbo Setup: Designed for T3 HE351 (4-3/8") / S300 Wastegated + S400 T6 Secondary

• Power Range: Up to 1000+ HP with proper turbos and tuning

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✅ What’s Included:

• 5x12 High-Flow S&B Air Filter w/ Power Cone Tip

• 5.00" Air Cleaner Pipe

• Braided Stainless Steel High-Temp Oil Supply Lines

• Oil Feed Fittings, Drain Lines, & Gaskets

• 3.00" Bead-Rolled Intercooler Pipe

• 3.50" One-Piece Cold Pipe w/ O-Ring Flange, Bead-Rolled Ends, & 1/8" NPT Port (Boost Reference)

• 3.50"–4.00" Silicone Reducer w/ T-Bolt Clamps

• 5.00" Silicone Boot + T-Bolt Clamps

• 4.00" Mandrel-Bent Downpipe

• High-Strength S400 Turbo Mounting Bracket

• CNC’d T3 1.00" Spacer

• Hot Pipe (Short Stretch Design) – Heat Insulated, CNC’d Flanges for Maximum Flow

• Optional Spring Wastegate Actuator for S300

• Turbo Studs & Mounting Nuts

• High-Torque V-Band & T-Bolt Clamps

• Water Relocation Line w/ Fittings

• High-Quality Powder Coating (Color Options Available)

• Full Install Instructions w/ Pictures

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💪 Built to Perform. Built to Last.

• CNC'd Mild Steel Flanges for Strength & Fitment

• TIG Welded for Durability Under Boost

• 5-Layer Silicone Boots Rated for 100+ PSI

• Built on Precision Engine Jigs for Factory-Like Fit

• 100% Made in the USA 🇺🇸

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🔧 Add Your Turbos & Go!

This piping kit is engineered for use with a T3-based HE351 or S300 wastegated turbo and a T6 S400 atmospheric charger. Customize your powerband with your choice of cast, billet, or 5-blade compressor wheels.

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💥 Say goodbye to lag and hello to lightning-quick spool, massive airflow, and cold EGTs.

Order your Stainless Diesel 2G Swap Twin/Compound Turbo Piping Kit today and unleash the full potential of your 5.9L Cummins!