Max Flow Intake Mouthpiece For 2004.5-2010 Chevrolet And GMC LLY / LBZ / LMM Duramax With HSP 4.5IN Intake - HSP Diesel - 003-HSP
Details
HSP Max Flow Turbo Inlet Mouthpiece for 2004.5–2010 Chevrolet / GMC Duramax LLY / LBZ / LMM (for HSP 4.5” Intake)
The factory turbo inlet mouthpiece not only lacks style — it also restricts airflow and limits your engine’s power potential. The HSP Max Flow Turbo Inlet Mouthpiece fixes these issues with a cast-aluminum, CNC-machined design built for performance, durability, and improved sealing. Featuring an integrated O-ring flange to keep unfiltered air out and a 1/2 IN NPT port in the PCV location, this mouthpiece is engineered to pair perfectly with an HSP 4.5” Cold Air Intake for maximum flow.
Included Components
- 1x 4.5IN Max Flow Mouthpiece
- 1x 1/2IN NPT Plug
- 1x 4.5IN Straight Boot (for HSP Intake)
- 2x 4.5IN Stainless Steel T-Bolt Clamps
Vehicle Fitment
- LLY: 2004.5–2005 (VIN Code 2) with HSP LBZ-style Cold Air Intake
- LBZ: 2006–2007 (VIN Code 2 or D) with HSP Cold Air Intake
- LMM: 2007.5–2010 (VIN Code 6) with HSP Cold Air Intake
Special Fitment Notes
- This mouthpiece will not fit with factory intakes.
- For use with aftermarket 4” intakes, see part number 003-4-HSP.
- This product requires a PCV reroute if one is not already installed (recommended: 003-1-HSP).
- 2004.5–2005 models require a 2006–2007 style intake, and the MAF sensor must be rescaled through tuning.
How to Identify VIN Code
The engine code is determined by the 8th character of the VIN. The model year is identified by the 10th character.
Overview
- Increased power and improved airflow
- O-ring sealed flange to prevent unfiltered air leaks
- Compatible with a wide range of aftermarket performance intakes
- Enhanced turbo sound and responsiveness
- Cast-aluminum design, CNC-machined for precision
- Multiple color and custom powder coat options available
Our Warranty
HSP NO BS LIMITED LIFETIME WARRANTY
For more information about our Lifetime, No BS Warranty, click HERE.
Fitments
- 2004 Chevrolet Silverado 2500 HD 6.6L DIESEL
- 2004 Chevrolet Silverado 3500 6.6L DIESEL
- 2004 GMC Sierra 2500 HD 6.6L DIESEL
- 2004 GMC Sierra 3500 6.6L DIESEL
- 2005 Chevrolet Silverado 2500 HD 6.6L DIESEL
- 2005 Chevrolet Silverado 3500 6.6L DIESEL
- 2005 GMC Sierra 2500 HD 6.6L DIESEL
- 2005 GMC Sierra 3500 6.6L DIESEL
- 2006 Chevrolet Silverado 2500 HD 6.6L DIESEL
- 2006 Chevrolet Silverado 3500 6.6L DIESEL
- 2006 GMC Sierra 2500 HD 6.6L DIESEL
- 2006 GMC Sierra 3500 6.6L DIESEL
- 2007 Chevrolet Silverado 2500 HD 6.6L DIESEL
- 2007 Chevrolet Silverado 3500 HD 6.6L DIESEL
- 2007 GMC Sierra 2500 HD 6.6L DIESEL
- 2007 GMC Sierra 3500 HD 6.6L DIESEL
- 2008 Chevrolet Silverado 2500 HD 6.6L DIESEL
- 2008 Chevrolet Silverado 3500 HD 6.6L DIESEL
- 2008 GMC Sierra 2500 HD 6.6L DIESEL
- 2008 GMC Sierra 3500 HD 6.6L DIESEL
- 2009 Chevrolet Silverado 2500 HD 6.6L DIESEL
- 2009 Chevrolet Silverado 3500 HD 6.6L DIESEL
- 2009 GMC Sierra 2500 HD 6.6L DIESEL
- 2009 GMC Sierra 3500 HD 6.6L DIESEL
- 2010 Chevrolet Silverado 2500 HD 6.6L DIESEL
- 2010 Chevrolet Silverado 3500 HD 6.6L DIESEL
- 2010 GMC Sierra 2500 HD 6.6L DIESEL
- 2010 GMC Sierra 3500 HD 6.6L DIESEL










