Overview

The HSP 2 IN Replacement Drivers Side Up-Pipe (Part Number: 031-2-HSP) is a premium upgrade designed specifically for the 2001-2004 Chevrolet and GMC Duramax models. This replacement part addresses the common weaknesses found in factory up-pipes, enhancing your vehicle's performance and reliability while reducing potential failure points that could leave you stranded.

Why Upgrade to the HSP 2 Inch Replacement Up-Pipe?

Understanding the critical role of the up-pipe is essential. It channels turbo exhaust gases to spin the turbo and generate boost. The factory up-pipes on Duramax trucks are notorious for their susceptibility to failure, often at the most inconvenient times. The primary failure point is the bellows, which can crack and cause leaks, leading to a significant drop in power. Additionally, warped flanges from degraded gaskets can create further issues that are difficult to repair due to the intense heat they endure.

Performance Advantages of the HSP 2 Inch Replacement Up-Pipe

The HSP 2 Inch Replacement Up-Pipe dramatically improves exhaust flow compared to the factory component. Enhanced flow results in increased power and torque while lowering EGTs and improving turbo spool-up time. Constructed from heavy wall 304 stainless steel tubing, this up-pipe features robust sleeved bellows, ensuring both performance and durability that far exceed OEM standards.

Fitment

• 2001-2004 Chevrolet Silverado 2500 (VIN Code 1)
• 2001-2004 Chevrolet Silverado 2500 HD (VIN Code 1)
• 2001-2004 Chevrolet Silverado 3500 (VIN Code 1)
• 2001-2004 GMC Sierra 1500 (VIN Code 1)
• 2001-2004 GMC Sierra 1500 HD (VIN Code 1)
• 2001-2004 GMC Sierra 2500 (VIN Code 1)
• 2001-2004 GMC Sierra 2500 HD (VIN Code 1)
• 2001-2004 GMC Sierra 3500 (VIN Code 1)

How to Identify VIN Code

• The engine code is determined by the 8th character of the VIN number.
• The model year is identified by the 10th character.

What’s Included with the HSP 2 Inch Replacement Up-Pipe?

• (1) 2 inch Stock Replacement Drivers Up-pipe
• (1) Up-pipe Gasket (Turbo Side)
• (1) Up-Pipe Gasket (Manifold Side)

Customer Feedback

Many users have reported significant improvements after installing the HSP 2 Inch Replacement Up-Pipe. One customer noted, “Installed this on my 2003 Duramax — the turbo spools noticeably faster, and I can feel the extra torque when towing.” Another added, “Fit perfectly and the quality is top-notch; I feel much more confident in my truck's reliability now.”

Conclusion

The HSP 2 IN Replacement Drivers Side Up-Pipe is a crucial component for any 2001-2004 Duramax owner looking to enhance their vehicle's performance and reliability. With its superior design and materials, this up-pipe not only improves exhaust flow but also provides peace of mind against common factory failures. Whether you're daily driving or tackling tough jobs, this upgrade ensures your Duramax is ready for anything.