# Fleece Performance 01-04 GM Duramax 6.6L LB7 High Flow LB7 Intake Horn

Increase your LB7's potential with this simple but effective upgrade. Back-to-back dyno pulls showed an increase of 15hp with this Fleece Performance high flow LB7 intake horn – that's about the cheapest 15hp from a bolt on you'll find anywhere! Kit Includes: Cast aluminum intake horn New gasket

This Part Fits:

Year

Make

Model

Submodel

2001-2004

Chevrolet

Silverado 2500 HD

Base

2001-2004

Chevrolet

Silverado 2500 HD

LS

2001-2004

Chevrolet

Silverado 2500 HD

LT

2004

Chevrolet

Silverado 2500 HD

WT

2001-2004

Chevrolet

Silverado 3500

Base

2001-2004

Chevrolet

Silverado 3500

LS

2001-2004

Chevrolet

Silverado 3500

LT

2004

Chevrolet

Silverado 3500

WT

2002-2004

GMC

Sierra 2500 HD

Base

2001-2002

GMC

Sierra 2500 HD

SL

2001-2004

GMC

Sierra 2500 HD

SLE

2001-2004

GMC

Sierra 2500 HD

SLT

2003-2004

GMC

Sierra 2500 HD

WT

2002-2004

GMC

Sierra 3500

Base

2001-2002

GMC

Sierra 3500

SL

2001-2004

GMC

Sierra 3500

SLE

2001-2004

GMC

Sierra 3500

SLT

2004

GMC

Sierra 3500

WT

## Details

- **Price:** 161.98 CAD
- **Vendor:** Fleece Performance
- **Type:** Air Intake Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 161.98 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - Primary
- User 2
- User 9
- User 1
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/fleece-performance-01-04-gm-duramax-6-6l-lb7-high-flow-lb7-intake-horn)
> Updated: 2026-06-27