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 degradation over time due to heat, pressure, and general wear. This often results in splits or leaks that can significantly reduce performance and potentially lead to turbocharger issues.

The HSP Solution - At HSP Diesel, we've engineered a superior alternative designed to deliver long-term reliability and improved performance.
Key Features:

• 2020-2024 Chevrolet/GMC 2500HD/3500HD L5P Cold Side Tube Flag Red
• 3.5 Inch Mandrel-Bent Aluminized Steel Pipe: Replaces the OEM rubber tubing with a rigid steel pipe, ensuring smooth and unrestricted airflow, increased durability, and a refined engine sound.
• Billet Coupler: CNC-machined billet aluminum coupler creates a robust and reliable connection point, eliminating a common failure spot in the OEM setup.
• High-Strength Silicone Boots and Stainless T-Bolt Clamps: Reinforced silicone boots paired with stainless T-bolt clamps provide a secure, leak-free seal even under high boost pressure.
• Custom Powder Coat Options: Available in a wide variety of finishes to complement any engine bay aesthetic.

What's Included:

• 1x 3.5 Inch Cold Side Intercooler Tube (HSP-IN-870)
• 1x L5P Intercooler Coupler (RFB-872-RFAB)
• 3x 3.5 Inch T-Bolt Clamp (RFB-423-RFAB)
• 1x 3 Inch T-Bolt Clamp (RFB-422-RFAB)
• 1x 3.5 Inch x 4 Inch Straight Boot (RFB-871-RFAB)
• 1x 3.5 Inch x 3 Inch 18 Deg Angled Boot (RFB-874-RFAB)

Vehicle Fitment:

• 2020–2024 Chevrolet Silverado 2500HD/3500HD (L5P Duramax)
• 2020–2024 GMC Sierra 2500HD/3500HD (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 single one that leaves our facility. For years, we've gone above and beyond for our customers—even without a formal policy. With the HSP No BS Limited Lifetime Warranty, that same commitment is now set in stone. We aim to provide clarity, dependability, and support through every step of ownership.