HSP Diesel 2011-2012 LML Duramax Deluxe Max Air Flow Bundle - 584-1-HSP

HSP 2011-2012 Chevrolet / GMC Deluxe Max Air Flow Bundle

Part Number: 584-1-HSP

The 584-1-HSP is best known as the Deluxe Max Air Flow Bundle for the 2011-2012 LML Duramax-equipped Chevrolet and GMC trucks. This bundle includes everything HSP Diesel manufactures for the LML platform to increase airflow, performance, and reliability in one complete kit.

What Is the Deluxe Max Air Flow Bundle for the LML?

Designed for truck owners looking to overhaul their intake, intercooler, and coolant systems all at once, this bundle improves factory systems without requiring a turbo or injection system upgrade. It also supports drop-in turbochargers and aftermarket fuel systems.

Cold Air Intake

Built with a 4.5" mandrel-bent intake tube and a high-flow filter, this intake system uses an open design and heat shield box to reduce heat soak. On average, dyno tests show gains of 20 horsepower and 58 lb-ft of torque.

Hot Side Intercooler Tube

Replaces the failure-prone factory pipe and eliminates the need for the lower intercooler boot by using a straight-through 3" mandrel-bent pipe. This reduces turbulence and improves airflow by up to 40%.

Max Flow Bridge and Cold Side Tube

Includes a two-piece, O-ring sealed Max Flow Bridge and a 3" mandrel-bent cold side tube. Together, they improve airflow, reliability, and boost control across the charge air system.

Upper Coolant Tube

Aluminum construction replaces the stock rubber hose to eliminate the risk of cracking and improves the look of your engine bay with powder coat finish options.

2" Replacement Up-Pipes

Fabricated from 304 stainless steel with sleeved bellows. These high-flow pipes reduce EGTs, improve spool-up, and resist fatigue over time.

VGT Intake Mouthpiece

This hand-assembled O-ring-sealed intake mouthpiece ensures proper airflow into the turbo and eliminates leaks from unfiltered air, completing the airflow upgrade system.

Factory Replacement Coolant Tank

The OEM plastic tank is known to yellow and crack. HSPs hand-assembled aluminum tank drops into the factory location and includes provisions for the OEM low coolant sensor.

Whats Included:

• 1x Hotside Tube (HSP-IN-218)
• 1x Bridge (HSP-IN-223)
• 1x Coldside (HSP-IN-228)
• 1x Fabricated Turbo Inlet (HSP-IN-216-2)
• 1x 4.5" Cold Air Intake Tube (HSP-IN-150-12)
• 1x 4.5" Hole Heatshield Box (HSP-IN-749)
• 1x Heatshield Box Lid (HSP-IN-746)
• 1x Factory Replacement Tank (HSP-IN-708-14)
• 1x Radiator Hose Tube w/Logo (HSP-IN-239-1)
• 1x 2" Stock Replacement Up Pipe - Driver- Ceramic Coated (HSP-IN-281-C)
• 1x 2" Stock Replacement Up Pipe - Passenger - Ceramic Coated (HSP-IN-280-C)
• 1x 4.5" Filter (RFB-413-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 1/8" NPT Brass Plug (RFB-811-RFAB)
• 1x M6x1.0x16mm Flange Bolt (RFB-893-RFAB)
• 1x Radiator Cap (RFB-806-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)
• 1x Duramax Pre-Made Hose - Rubber (RFB-398-RFAB)
• 1x 5/8" Worm Gear Clamp (RFB-403-RFAB)
• 1x 1/2" Worm Gear Clamp (RFB-405-RFAB)
• 60x 5/8" PCV Hose (RFB-407-RFAB)
• 4x 3" T-Bolt Clamp (RFB-422-RFAB)
• 2x 3"x4" Straight Boot (RFB-430-RFAB)
• 1x 3/4" to 5/8" Heater Hose Connector (RFB-462-RFAB)
• 1x 3/8" Coolant Plug - Aluminum (RFB-808-RFAB)
• 1x LML Rear Cover Coolant Fitting (RFB-809-RFAB)
• 1x LML Coolant Plug O-Ring (RFB-813-RFAB)
• 2x M6x1.0x25mm Flange Bolt (RFB-896-RFAB)
• 4x M6x1.0x20mm Flange Bolt (RFB-897-RFAB)
• 14x 1/2" Heater Hose (RFB-400-RFAB)
• 3x 1/2" Worm Gear Clamp (RFB-405-RFAB)
• 1x 1" Worm Gear Clamp (RFB-406-RFAB)
• 1x Low Coolant Sensor (RFB-460-RFAB)
• 1x 3/8" Coolant Plug - Aluminum (RFB-808-RFAB)
• 4x 1 3/4" Worm Gear Clamp (RFB-408-RFAB)
• 1x 1.75" 90degree Boot - Rubber (RFB-433-RFAB)
• 1x 1.75"x3" Straight Boot - Rubber (RFB-437-RFAB)

Special Note:

HSP Diesel is currently transitioning boot styles. Some kits may ship with unbranded boots. This change helps us maintain high availability and quality.

Vehicle Fitment:

• LML: 2011-2012 (8th digit of VIN = 8)

How to Verify: The 8th character of your VIN represents the engine code. The 10th character indicates the model year.

Note: Although the VIN code is the same as later years, small engine bay changes make this kit specific to 2011-2012 trucks only.

Overview:

• Increased performance and airflow
• Optimized for stock and drop-in setups
• 4.5" Cold Air Intake for maximum air volume
• 3" Mandrel-Bent Hot and Cold Side Tubes
• High-strength 5-layer silicone boots
• Powder coat options available
• Upgrades and replaces common failure points

Our Warranty

HSP “No BS” Limited Lifetime Warranty
We stand firmly behind our products. For warranty terms, support, and the claims process, click here.