2007.5-2010 Duramax LMM HSP Diesel Max Air Flow Bundle

***This kit carries a 2-3 week lead time***

What Is the Max Air Flow Bundle for the LMM Duramax?

The Max Air Flow Bundle is a curated package of HSP Diesels most effective performance upgrades for the LMM platform. By replacing stock chokepoints, this bundle boosts airflow and performance while also offering cost savings by bundling the components together.

2" Replacement Passenger Side Up-Pipe

Factory up-pipes are restrictive and prone to failure—especially on the passenger side. HSPs 2" up-pipe uses heavy wall 304 stainless steel tubing for better flow and long-term durability.

Hot Side Intercooler Pipe

The factory pipe is a frequent failure point. HSPs 3" mandrel-bent tube eliminates the lower boot with a direct connection, reducing turbulence and increasing flow by up to 40%.

Cold Air Intake

HSP's Cold Air Intake features a 4.5" mandrel-bent tube and high-flow filter, delivering cooler, cleaner air. Its ideal for performance upgrades and contributes to consistent gains in throttle response.

VGT Intake Mouthpiece

Hand-formed and optimized for airflow, this mouthpiece enhances the intake systems performance. It also supports PCV rerouting and resonator box removal (see part 003-1-HSP for PCV kit).

Cold Side Pipe and Max Flow Bridge

The 3" mandrel-bent cold side tube and two-piece Max Flow Bridge provide improved installation, strength under boost, and superior airflow, completing the charge air system when paired with the hot side tube.

Whats Included:

• 1x Hotside Tube (HSP-IN-207)
• 1x Bridge Section (HSP-IN-220)
• 1x Bridge Neck (HSP-IN-743-2)
• 1x Coldside Behind Alt (HSP-IN-202)
• 1x 4.5" Cold Air Intake Tube (HSP-IN-150-2)
• 1x 4.5" Hole Heatshield Box (HSP-IN-748)
• 1x Heatshield Box Lid (HSP-IN-746)
• 1x Fabricated Turbo Inlet (HSP-IN-216-1)
• 1x 2" Stock Replacement Up Pipe - Passenger - Ceramic Coated (HSP-IN-280-C)
• 1x 4.5" Filter (RFB-413-RFAB)
• 1x Bridge Neck O-Ring (RFB-670-RFAB)
• 1x 1/8'' NPT Brass Plug (RFB-811-RFAB)
• 2x Bridge Neck Stud (RFB-902-RFAB)
• 2x Bridge Neck 12-Point Nut (RFB-903-RFAB)
• 4x 1/8" Aluminum Rivet (RFB-098-RFAB)
• 3x 10-32 x 3/8" Button Head Screws (RFB-099-RFAB)
• 16x Trim Lock (RFB-411-RFAB)
• 1x Heatshield Box Lid Backer Plate (RFB-746-BP-RFAB)
• 2x M4x.7x10mm Bolt (RFB-901-RFAB)
• 1x 4" T-Bolt Clamp (RFB-424-RFAB)
• 1x 4.5" T-Bolt Clamp (RFB-435-RFAB)
• 1x 4.5" - 4" Straight Boot (RFB-495-RFAB)
• 1x 2.25" T-Bolt Clamp (RFB-420-RFAB)
• 3x 3" T-Bolt Clamp (RFB-422-RFAB)
• 1x 3"x4" Straight Boot (RFB-430-RFAB)
• 1x 2.25" to 3" Reducer Boot (RFB-441-RFAB)
• 1x Up-pipe Gasket (Turbo Side) (RFB-821-RFAB)
• 1x Up-Pipe Gasket (Manifold Side) (RFB-822-RFAB)
• 24x 5/8" Heater Hose (RFB-401-RFAB)
• 2x 5/8" Worm Gear Clamp (RFB-403-RFAB)
• 4x 3" T-Bolt Clamp (RFB-422-RFAB)
• 2x 3"x4" Straight Boot (RFB-430-RFAB)
• 1x Turbo Inlet O-Ring (RFB-628-RFAB)