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Fleece Modified LB7 Intake Horn FPE-INTAKEHORN
PART#
FPE-INTAKEHORN | SKU FPE-INTAKEHORN
★★★★★
Vehicle Fitment For:
2001-2004 GM 6.6L Duramax Lb7
See full application list below
NOTES: Fits Federal emissions trucks only. Not for use on California emissions models.
$99.75
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Description
The Fleece FPE-INTAKEHORN Modified LB7 Intake Horn will increase the potential of your 2001-2004 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 you'll find anywhere! Gasket included.
Features:
- 15HP Increase
- Easy Upgrade
- Includes Intake Horn & Mounting Gasket
Shipping Restrictions Apply 
This product can not be shipped to these states/provinces: CA
This product can not be shipped to these states/provinces: CA
Note:
Fits Federal emissions trucks only. Not for use on California emissions models.
Instructions & Tech Info
Installation Info
Customer Average
1 Hour
Reviews For Fleece Performance FPE-INTAKEHORN
Verified Buyer
Lb7 elbow
Chris (OR) | June 6th, 2026
Clean, nicely machined cast piece, with nice cutouts for the hard-to-reach lower bolts. Comes with nice gasket.,
Verified Buyer
Horn of good and plenty
Chris (Michigan) | November 3rd, 2025
Price was right! I wanted something that appeared stock in appearance and this fits the bill.I really appreciate the cuts on the lower bolt holes for future repairs. I can't speak on the HP gain,I did several mods at the time of install.
Verified Buyer
Nice product
Edmond (NJ) | December 14th, 2024
Showed black but came aluminum.
Verified Buyer
Super Easy Install
Justin (Minnesota) | November 23rd, 2024
Great quality, all you need to do on a federal emissions LB7 is remove your air intake remove, remove the PCV bridge hose, remove the sensor nut on the intake and move over to the side. Then remove all three bolts on the turbo horn. Took me 20 min to do it. Tools you need: screw driver or 5/16 socket for the hose clamps, 45 degree need nose pliers or clamp tool for stock clamps on PCV bridge hose, 10mm ratchet wrench and telescoping magnet in case you drop a bolt in the valley. Happy Trucking!
Verified Buyer
Fleece turbo horn
Matt | May 11th, 2024
Good build quality. Definitely will allow more air flow into the turbo. The truck definitely feels a little faster and turbo sounds a little louder. The 2 bottom bolts were super easy to get in because of the notches instead of the holes on the old one so you could thread the bolts in and slide the intake over them.
Verified Buyer
Turbo inlet tube
Dave (Arizona) | November 5th, 2023
No hassle ordering. Shipping was great. Fit right in place. Very pleased. It will make it a lot easier next time I have to get in there.
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Frequently Asked Questions
What is the opening diameter of this AirHorn? Just wanted to see the diameter of this compared to ProFab and stock, thanks guys!
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?
The intake horn will work on 01-04 Federal Emissions LB7’s, but has not yet been tested on a California Emissions trucks.
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Specifications For Fleece Performance FPE-INTAKEHORN
MPN
FPE-INTAKEHORN
SKU
FPE-INTAKEHORN
GTIN
635909310365
ID
20637
Manufacturer Name
Fleece Performance
Shipping Weight
2.00 lb.
Shipping Length
10 in.
Shipping Width
10 in.
Shipping Height
10 in.
Fuel Type
Diesel
E-Code
4
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Internal
L1R5
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