HSP Diesel 2020-2024 Silverado/Sierra 2500HD/3500HD L5P Cold Side Tube Deluxe Polar White
$365.75 USD
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HSP Diesel 2020-2024 Silverado/Sierra 2500HD/3500HD L5P Cold Side Tube Deluxe Polar White
SKU: HSP-D-605-2D-HSP-W-GVJG
$365.75 USD
Shipping calculated at checkout.
The Problem with the Factory Cold Side Pipe - The OEM cold side intercooler pipe on the 2020-2024 L5P Duramax is functional, but far from optimal. Constructed from rubber, the stock tube is vulnerable to heat, pressure, and age-related degradation. This often leads to splits or leaks, reducing performance and risking turbocharger damage.
The HSP Solution - HSP Diesel has engineered a premium alternative designed for both long-term durability and high-performance functionality.
Key Features:
- 2020-2024 Chevrolet/GMC 2500HD/3500HD L5P Cold Side Tube Deluxe Polar White
- 3.5 inch Mandrel-Bent Aluminized Steel Pipe: Offers smooth, unrestricted airflow for better throttle response, improved reliability, and a cleaner engine sound.
- Billet Coupler Set: Includes a CNC-machined billet aluminum intercooler coupler and a billet throttle body coupler for the strongest, most secure connections available - eliminating weak points common in OEM designs.
- Reinforced Silicone Boots and Stainless Steel T-Bolt Clamps: Leak-free performance under high boost thanks to high-strength boots and T-bolt clamps.
- Custom Powder Coat Options: Multiple finishes are available to suit your truck's aesthetic and complete the under-hood look.
What's Included:
- 1x Coldside (HSP-IN-870)
- 1x Welded Throttle Body Coupler (HSP-IN-873)
- 1x 20-24 L5P Throttle Body Coupler (RFB-873-RFAB)
- 1x 3.5 inch Aluminum 60 degree Bend (RFB-310-RFAB)
- 1x 20-24 L5P Intercooler Coupler (RFB-872-RFAB)
- 4x 3.5 inch T-Bolt Clamp (RFB-423-RFAB)
- 1x 3.5 inch x 4 inch Straight Boot (RFB-871-RFAB)
- 1x 3.5 inch x 3.5 inch 18 Degree Angled Boot (RFB-875-RFAB)
Vehicle Fitment:
- 2020-2024 Chevrolet Silverado 2500HD / 3500HD w/ L5P Duramax
- 2020-2024 GMC Sierra 2500HD / 3500HD w/ L5P Duramax
OEM Replacement For:
- GM Part Number 84682179
HSP No BS Limited Lifetime Warranty:
- At HSP, we believe in our products and stand firmly behind every component that leaves our facility. For years, we've supported customers by going above and beyond - even before we had a formal policy. Our No BS Limited Lifetime Warranty now puts that same support in writing, outlining the process and guidelines to ensure peace of mind with every purchase.
questions we get about hsp diesel daily:
Who is HSP Diesel and what makes their products different?
HSP Diesel builds high-flow, made-in-the-USA diesel performance hard parts that solve real-world airflow restrictions. Their components are CAD-designed, flow-tested, and engineered for durability, clean fitment, and consistent performance. Customers choose HSP because the quality, welds, powder coat options, and fitment are more refined than generic diesel aftermarket parts.
Are HSP Diesel products compatible with my truck?
Most HSP Diesel components are designed for GM Duramax platforms (LB7, LLY, LBZ, LMM, LML, L5P). Each product page lists exact year and engine compatibility. If you're not sure which Duramax engine you have, send us your VIN and we’ll gladly confirm fitment before you order.
Do HSP Diesel parts improve performance?
Yes. Upgrades like intercooler pipes, Y-bridges, turbo inlet kits, and intakes dramatically reduce airflow restriction. Most owners see faster spool, cooler EGTs, smoother towing performance, and better throttle response—even on otherwise stock trucks.
Do I need tuning after installing HSP Diesel parts?
Most HSP airflow parts (intakes, charge pipes, Y-bridges, turbo mouthpieces) do not require tuning to install or drive. However, a tune may help the truck take full advantage of the increased airflow. If a part requires tuning—such as a turbo upgrade—the product page will clearly note it.
Are HSP Diesel parts emissions compliant?
Many HSP Diesel components work with factory emissions systems in place. Some turbo-related or race-use parts may not be emissions compliant. Always read the emissions note on the product page and follow local laws before installation.
How long does it take for HSP Diesel parts to ship?
Most HSP parts are built and powder-coated after you order. Standard colors ship sooner, while custom colors may require 2–4+ weeks depending on workload. Lead times are shown on each product page and updated frequently.
What powder coat colors are available?
HSP offers a wide range of standard colors (black, red, white, blue, etc.) plus custom powder coat finishes. Custom colors may add cost and lead time. If you're trying to match an existing part, send us a photo and we can help you choose the closest match.
Do HSP Diesel kits come with everything needed for installation?
Most HSP parts include the clamps, boots, brackets, and hardware required for a clean install. Larger systems—like turbo kits or intercooler upgrades—may require additional supporting parts. Each product page lists everything included in the kit.
Are HSP Diesel parts compatible with other aftermarket brands?
In most cases, yes. As long as the parts use compatible diameters and mounting points, HSP Diesel components integrate well with other brands of turbos, intakes, intercooler systems, and fueling components. If you already have mods installed, tell us what’s on the truck and we’ll check compatibility.
Will HSP Diesel parts help with towing?
Absolutely. Improved airflow reduces EGTs, increases turbo response, and helps the truck pull more consistently under load. Many daily drivers and towing-focused Duramax owners upgrade to HSP specifically for cooling and drivability gains.
What warranty do HSP Diesel products include?
HSP Diesel provides a warranty against workmanship and material defects. If a part arrives damaged or defective, contact us with photos and your order number and we’ll assist in getting it corrected.
Can I install HSP Diesel parts myself?
Many components—like charge pipes, intakes, and coolant tanks—are DIY-friendly. More complex installs (Y-bridges, turbo kits, or tight-tolerance piping) may require professional installation. Review the instructions to make sure you're comfortable with the job.
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