Introducing the HSP Stock Turbo Inlet Horn

If you own a 2001-2004 Duramax-equipped Chevrolet or GMC truck, you won't want to miss out on the 103-HSP, better known as the HSP Stock Turbo Inlet Horn. This little upgrade is a game-changer for your LB7 engine, far surpassing the factory version!

Why Upgrade to the HSP Stock Turbo Inlet Horn?

The stock turbo inlet horn on LB7 trucks leaves a lot to be desired. Many enthusiasts at HSP Diesel have noticed that the factory part is quite restrictive, failing to funnel air efficiently into the turbo. The design, with its awkward bends and limited size, just doesn't cut it. Plus, let’s be honest—the stock horn isn’t winning any beauty contests either. It’s plain and hard to clean up!

What Makes the HSP Stock Turbo Inlet Horn Stand Out?

Let’s talk size! The HSP Stock Turbo Inlet Horn boasts a generous 3.5 inches, which is significantly larger than the factory part. Why does this matter? A bigger diameter allows for better airflow, which is crucial for the performance of your turbo. Many LB7 owners have complained that the stock turbo feels choked, and that’s where our inlet horn comes in. By installing the HSP Stock Turbo Inlet Horn, you can pack your stock turbo with much more air, pushing it to its limits. In fact, numerous customers have reported noticeable power gains with just this upgrade alone! When paired with the HSP Diesel Cold Air Intake, many have even seen a drop in exhaust gas temperatures.

What’s Included with the HSP Stock Turbo Inlet Horn?

• Turbo Inlet Horn
• (3) M6x1.02x20mm bolts

Compatibility of the HSP Stock Turbo Inlet Horn

• LB7: 01-04 VIN Code 1

How to Identify Your VIN Code

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

*Important Installation Note*

Be sure to use the bolts provided for installation. Avoid using factory hardware to ensure a proper fit!

Key Features of the HSP Stock Turbo Inlet Horn

• Designed as a direct replacement for stock applications
• Improved airflow
• Increased power output
• Powder coating option to enhance your engine bay’s appearance
• Extended turbo life
• Faster turbo spool-up

Our Warranty: HSP No BS? Limited Lifetime Warranty

We Stand Behind Our Products

At HSP, we take pride in our products and back each one with confidence. For years, we’ve been committed to addressing any issues our customers faced, and now we’re excited to offer a clear and straightforward warranty. Our No BS? Limited Lifetime Warranty outlines the process and guidelines, ensuring you know exactly what to expect. We’re dedicated to maintaining the high standard of service that sets us apart!