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Fleece FPE-INTAKEHORN Modified LB7 Intake Horn

2001-2004 GM 6.6L Duramax Lb7
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The Fleece FPE-INTAKEHORN Modified LB7 Intake Horn will increase the potential of your 01-04 GM 6.6L Duramax LB7 with this simple, but effective upgrade. Back-to-back dyno pulls showed an increase of 15hp with this Fleece Performance Modified LB7 Intake Horn thats about the cheapest 15hp from a bolt on youll find anywhere! Gasket included.


  • 15HP Increase 
  • Easy Upgrade 
Note: Fits Federal emissions trucks only. Not for use on California emissions models. 


  • Manufacturer NameFleece Performance
  • Weight2.00 lb.
  • Height10 in.
  • Width10 in.
  • Length10 in.


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Most Popular Questions

What is the opening diameter of this AirHorn? Just wanted to see the diameter of this compared to ProFab and stock, thanks guys!
View Staff Answer 
The Fleece FPE-INTAKEHORN Modified LB7 Intake Horn features a stock size front opening and the rear by the turbocharger opens up to a full 3" for increased flow and performance.
Does this part fit on California Emission LB7?
View Staff Answer 

The intake horn will work on 01-04 Federal Emissions LB7’s, but has not yet been tested on a California Emissions trucks.

Can i ship this to california if its for a non emissions vehicle?
View Staff Answer 

The Fleece FPE-INTAKEHORN Modified LB7 Intake Horn can be shipped to customers in CA, but will not physically work on the California emissions model trucks.