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Vivid Racing Gear 
HSP Stock Turbo Inlet Horn for Duramax Trucks
If you own a 2001-2004 Duramax-equipped Chevrolet or GMC truck, the HSP Stock Turbo Inlet Horn is a must-have upgrade for your LB7. This part is not just an afterthought; it’s a significant improvement over the factory version.
Why Upgrade to the HSP Stock Turbo Inlet Horn?
Let’s be honest—the stock turbo inlet horn on LB7 trucks leaves a lot to be desired. Many enthusiasts and experts agree on this point. The factory turbo inlet horn struggles to funnel air efficiently from the intake to the turbo, which can lead to a restrictive flow due to its size and awkward bends. Plus, it’s not exactly a showpiece; its plain design does little to enhance your engine bay.
What Makes the HSP Stock Turbo Inlet Horn Different?
Right off the bat, the HSP Stock Turbo Inlet Horn boasts a generous 3.5-inch diameter, which is a considerable upgrade from the factory part. This larger size allows for improved airflow, addressing the common complaint that the stock turbo feels choked. The factory IHI turbo needs a steady stream of air to perform at its best, and with the HSP horn, you can deliver significantly more air than before. Many customers have reported noticeable power gains without any other modifications. When paired with the HSP Diesel Cold Air Intake, users have even experienced a slight reduction in exhaust gas temperatures!
What’s Included with the HSP Stock Turbo Inlet Horn?
- Turbo Inlet Horn
- (3) M6x1.02x20mm bolts
Compatibility: What Does the HSP Stock Turbo Inlet Horn Fit?
- LB7: 01-04 VIN Code 1
How to Identify Your VIN Code
Your engine code can be found in the 8th character of your VIN number, while the 10th character indicates the year of your truck.
*Important Installation Note*
Please use only the bolts provided for installation. Avoid using any factory hardware, as it may not be compatible.
Key Features
- Direct replacement for stock applications
- Enhanced airflow
- Increased power output
- Optional powder coating for a cleaner engine bay
- Longer turbo lifespan
- Faster turbo spool-up
Our Warranty
HSP No BS? Limited Lifetime Warranty
At HSP, we take pride in our products and stand behind each one that leaves our facility. For years, we’ve made it a point to address any concerns our customers have, and while we didn’t have a formal warranty before, we’re stepping it up now. Our No BS? warranty is designed to be straightforward and easy to understand. Below, you’ll find all the details about our warranty process and guidelines.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Welcome to Vivid Racing, your ultimate destination for high-quality diesel performance parts. Among our extensive range of products, HSP Diesel stands out as a premier brand known for its commitment to quality, innovation, and performance enhancement for diesel vehicles.
History of HSP DieselFounded by a team of diesel enthusiasts, HSP Diesel has rapidly evolved into a trusted name in the automotive aftermarket industry. With a passion for performance and a dedication to customer satisfaction, HSP Diesel has been at the forefront of developing cutting-edge solutions for diesel engines since its inception. Their journey began with a simple goal: to provide high-performance parts that enhance the driving experience of diesel truck owners.
Categories of Parts Offered by HSP DieselHSP Diesel specializes in a wide array of performance parts designed specifically for diesel trucks. Their product lineup includes:
- Cold Air Intakes
- Exhaust Systems
- Intercoolers
- Turbo Kits
- Fuel System Upgrades
Each category is meticulously engineered to deliver superior performance, efficiency, and reliability, ensuring that your diesel vehicle performs at its best.
What Makes HSP Diesel the Best Choice?What sets HSP Diesel apart from the competition is their unwavering commitment to quality and performance. Every part they manufacture undergoes rigorous testing and quality control to ensure it meets the highest standards. Their innovative designs not only improve horsepower and torque but also enhance fuel efficiency, making them a favorite among diesel enthusiasts.
Moreover, HSP Diesel is dedicated to customer service, providing expert advice and support to help you choose the right parts for your specific needs. Whether you're a casual driver or a serious racer, HSP Diesel has the solutions to elevate your diesel performance.
Explore our collection of HSP Diesel parts at Vivid Racing and experience the difference in performance and quality that only HSP Diesel can deliver!
| Sale price | None |
| Wholesale price | $142.93 |
| Shipping |
Weight: 3.00 Length: 10 Width: 10 Height: 10 |
| Product Added At | Tuesday 26 February, 2019 |
| Product Modified At | Tuesday 27 May, 2025 |
| Imported By | ETLOverride |
| Last Edited By | kathi@vividracing.com |
| View In Admin |
| Carb Approved | No |
|---|---|
| Carb Number | - |
| Epa Status | - |
| Prop65 | - |
| Carb Required | - |
| Vendor | Inv | Cost | Retail | Jobber | MAP | Core | Updated | |||
|---|---|---|---|---|---|---|---|---|---|---|
| HSP Diesel | $121.13 | $170.00 | ? | $161.50 | ? | 2025-05-27 16:33:49 |
