Upgrade Your Duramax with HSP 2 IN Replacement Up-Pipe

If you're looking for a reliable replacement for your 2001-2004 Chevrolet and GMC Duramax, the HSP 2 IN Replacement Driver's Side Up-Pipe (model 031-2-HSP) is an excellent choice. Not only does it enhance performance, but it also addresses common failure points that can leave you in a tough spot.

Why Consider an HSP 2 Inch Replacement Up-Pipe?

Before we dive into the details of up-pipe issues, let’s talk about what an up-pipe actually does. The up-pipe channels turbo exhaust gases, which spin the turbo and generate boost. Unfortunately, the factory up-pipes on Duramax trucks are known for frequent failures, often at the worst possible times. A common weak spot is the bellows, which tend to crack and lead to leaks. This can create a cascade of problems, including warped flanges from damaged gaskets that can't be repaired due to heat, resulting in ongoing leaks.

What Makes the HSP 2 Inch Replacement Up-Pipe Stand Out?

The key difference between the factory up-pipe and the HSP 2 Inch Replacement is the flow. The HSP up-pipe offers significantly better flow, which translates to increased power and torque while also lowering EGTs and enhancing spool-up. But it’s not just about performance; we've also prioritized reliability. Our up-pipes are crafted from heavy-wall 304 stainless steel tubing and feature heavy-duty sleeved bellows, ensuring that you get both performance and durability far beyond what the factory parts can provide.

What’s Included with the HSP 2 IN Replacement Up-Pipes?

• (1) 2 Inch Stock Replacement Driver's Up-Pipe
• (1) Up-Pipe Gasket (Turbo Side)
• (1) Up-Pipe Gasket (Manifold Side)

What Vehicles Are Compatible with the HSP 2 IN Replacement Up-Pipe?

• LB7: 01-04 VIN Code 1

How to Identify Your VIN Code

Your engine code is determined by the 8th character of the VIN number, while the 10th character indicates the year of your truck.

Key Features

• Increased Reliability
• Enhanced Power
• Lower EGTs
• Improved Spool-Up
• Durable Stainless Steel Design
• Gaskets Included
• Heavy-Duty Sleeved Bellows

Our Warranty

HSP No BS Limited Lifetime Warranty

At HSP, we take pride in our products and stand firmly behind each one that leaves our facility. For years, we've addressed nearly every concern our customers have had, but we didn't have a formal warranty in place. While we always go above and beyond for our customers, we’re excited to take things to the next level with our No BS warranty. Below, you’ll find all the details you need to understand our warranty process and guidelines.