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Fleece Performance FPE-INTAKEHORN Modified LB7 Intake Horn for Duramax 6.6L

(Chevrolet Silverado 2500 HD 2001-04, Silverado 3500 2001-04, C4500 Kodiak 2003-04, C5500 Kodiak 2003-04; GMC Sierra 2500 HD 2001-04 + 3 more models)

Manufacturer

Picture for manufacturer Fleece Performance

Part Number

FPE-INTAKEHORN
14 reviews
Sale Price

$99.75

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Fleece Performance Modified LB7 Intake Horn is a simple yet highly effective upgrade for 2001-2004 Duramax LB7 engines. This cast aluminum intake horn replaces the restrictive factory intake horn to improve airflow into the turbocharger, delivering proven power gains of approximately 15 horsepower on back-to-back dyno testing—making it one of the most cost-effective bolt-on performance upgrades available.

Key Features:

  • Cast aluminum construction with durable satin finish
  • Optimized internal geometry reduces intake restriction
  • Direct bolt-on replacement for LB7 Duramax (2001-2004)
  • Proven 15 horsepower gain on dyno testing
  • Increases turbo efficiency and throttle response
  • Professional appearance with quality finish

This modified intake horn is designed specifically for the 6.6L Duramax LB7 engine found in 2001-2004 GM trucks. By opening up the intake path, it allows the turbocharger to breathe more efficiently, reducing intake restriction and improving overall engine performance. Installation is straightforward using factory mounting points.

Products specifications

Fits

Chevrolet Silverado 2500 HD 2001-04, Silverado 3500 2001-04, C4500 Kodiak 2003-04, C5500 Kodiak 2003-04; GMC Sierra 2500 HD 2001-04, Sierra 3500 2001-04, C5500 Topkick 2003-04, C4500 Topkick 2003-04

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The prices and shipping are the best that I can find

Great Service!

Seamless website. Nicely set up.

Great price

Get a 4 star for the ordering process. Not enough product information on the site but when I called they were very friendly and informative.

Thanks

I found autoplicity while trying to locate a side mirror for my vehicle. The website is user friendly and the prices are fantastic! The product is also shipped quickly... I am definitely going to purchase from Autoplicity again!

Best price I could find on the net and super fast shipping.

All good

Everything was great just the returning could use help. The first ine i ordered was wrong and shipping back to you is more costly than i hoped.

I found what I wanted and it was overall a pleasant experience.

Ordered on Sunday, called on Monday for tracking #, received product on Tuesday, and received tracking # on Wed!! I got the item before Autoplicity got a chance to send me the email with the tracking #. A+++!!!

The best deal on the same parts that everyone else has. Saved me $75 from the best price any 'Seller" had on the "bay". Will be back. A+ service.

I will be back with you guys

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