





HE351 Twin Piping Kit '03-'07 3G 5.9L
🔥 Twin/Compound Turbo Piping Kit – 2003–2007 Dodge Ram 5.9L Cummins | HE351 + S400 Setup
Boost your 5.9L Cummins with Stainless Diesel’s 3rd Gen Twin/Compound Turbo Piping Kit — precision-engineered for 2003–2007 Dodge Ram trucks running the factory HE351 and an S400 T6 turbo. This kit is designed to drastically lower EGTs, improve drivability, and deliver fast spool-up with massive top-end horsepower — the ultimate combination for both street and competition builds.
Whether you're replacing a laggy single turbo or building a compound setup from scratch, this piping kit gives you the airflow and reliability your Cummins deserves.
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đź› Designed for Performance:
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Built specifically for 2003–2007 Dodge Ram 2500/3500 5.9L Cummins
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Compatible with factory HE351 high-pressure turbo & S400 T6 atmospheric turbo
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Includes Stainless Diesel HE351 Spring Gate Actuator
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Supports high-boost applications — tested to 100+ PSI
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Made in the USA 🇺🇸
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🔧 What’s Included:
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Stainless Diesel HE351 Springgate Actuator (Included!)
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5x12 High-Flow S&B Air Filter w/ Power Cone Tip
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5.00" Air Cleaner Pipe
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5.00" Silicone Boot + T-Bolt Clamps
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3.50" to 4.00" Silicone Reducer + T-Bolt Clamps
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3.00" Bead-Rolled Intercooler Pipe
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3.50" 1-Piece Cold Pipe (O-Ring Flange + Bead-Rolled Ends + 1/8" NPT Boost Reference Port)
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4.00" Downpipe
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Hot Pipe with CNC’d Flanges, Heat Insulation & Short-Stretch Technology
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CNC’d T3 1.00" Spacer
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Braided Stainless Steel High-Temp Oil Feed Lines & Fittings
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Oil Drain Lines & Gaskets
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Turbo Mounting Studs & Nuts
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S400 High-Strength Turbo Mounting Bracket
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High Torque T-Bolt Clamps & V-Band Clamps
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5-Layer Extreme Duty Silicone Boots
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Optional High-Quality Powder Coat Finish (Custom Colors Available)
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Detailed Installation Instruction Packet with Photos
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đź’Ş Built to Last:
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All piping made from aluminized mild steel
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CNC’d flanges for perfect fitment
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TIG-welded construction for maximum durability
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Built on exact engine jigs — unmatched installation ease and reliability
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No plastic pipes or rubber hoses — built to handle serious boost
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âś… Why Choose This Kit?
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Drastically reduces EGTs
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Retains fast spool with factory HE351 while adding massive top-end from S400
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Perfect for towing, street, or track builds
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Fully upgradeable — add turbos and go
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đź›’ Elevate your build with compound boost done right. Add to cart now and give your 5.9L Cummins the airflow and reliability it needs to dominate.
Pairs well with
Ships within 1-2 business days.
Free shipping & returns

HE351 Twin Piping Kit '03-'07 3G 5.9L
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FAQs
Please read our FAQs page to find out more.
Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.