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Part #:

HSP LB7 Stock Turbo Inlet Horn

2001-2004 GM 6.6L Duramax LB7
Part #:
★★★★★ ★★★★★ 1 Reviews
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Eliminate the restrictive factory turbo inlet on your 2001-2004 GM 6.6L Duramax LB7 with the HSP LB7 Stock Turbo Inlet Horn. Designed to bolt onto your stock tubrocharger, this 3.5" inlet horn maximizes airflow to your turbocharger. With many reporting a decrease in EGT's and increased power gains, this simple upgrade does not require any other modifications is a must-have on the LB7 model trucks.

  • 3.5" Turbo Inlet Horn 
  • For Stock Turbochargers
  • Increased Spool-Up & Throttle Response
Application Note:
Includes 3 new mounting bolts. 
Turbo inlet gasket not included. 

Product Options

103-HSP-RAW Raw
103-HSP-BR Blood Red
103-HSP-CB Candy Blue
103-HSP-CP Candy Purple
103-HSP-CR Candy Red
103-HSP-DG Dark Grey
103-HSP-GB Gloss Black
103-HSP-O Orange
103-HSP-SB Satin Black
103-HSP-W White


  • Manufacturer Name HSP
  • Shipping Weight 5.00 lb.
  • Shipping Length 10 in.
  • Shipping Width 10 in.
  • Shipping Height 10 in.
  • Fuel Type Diesel
  • Warranty Yes
  • Warranty Info Limited Lifetime
  • Prop 65 WARNING: Cancer & Reproductive Harm -


Currently Viewing Reviews with a rating of 5. Click here to reset.
★★★★★ ★★★★★
5.0/5 Stars out of 1 Reviews
This product is great!
| August 14th, 2018
For what it is, and the price I paid... I think this thing is an awesome little piece to add to the stock turbo. It definitely helped with throttle response. As far as MPG, I guess I'll find out in a few tanks when things level back out.

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Questions and Answers

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Most Popular Questions

Will this work with a stock intake? or do I need an after market intake to make this work?
View Staff Answer 
Yes, the HSP LB7 Stock Turbo Inlet Horn works on your truck and does not require any modifications to your truck.
Emissions Notice

This product is not legal for sale or street use in California. Certain aftermarket products are subject to governmental emission standards regulated by the California Air Resources Board. In order for these products to be legal on a specific vehicle in California, the part number must receive a CARB Executive Order (EO) number. This number makes the part legal for use only on specific years, makes and models of vehicles. A decal with CARB EO number for these parts must be displayed in the engine bay to satisfy smog inspection requirements.