HSP Diesel Deluxe No Bridge/Cold Side Bundle Kit For 2006-2007 LBZ Duramax - HSP-D-394-HSP

HSP Deluxe No Bridge / Cold Side Bundle Kit for 2006-2007 Chevrolet / GMC

Part Number: 394-HSP

The 394-HSP is best known as the No Bridge and No Cold Side Max Air Flow Bundle for the 2006-2007 LBZ Duramax-equipped Chevrolet and GMC trucks. This bundle includes everything HSP Diesel makes to maximize performance while keeping your emissions system intact.

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

This comprehensive bundle is designed for LBZ owners who want a full upgrade in one package. Its ideal whether you're staying with the stock turbo/injection system or upgrading later, offering increased performance, reliability, and engine bay styling.

Billet Thermostat Housing Kit

This CNC-machined billet aluminum housing eliminates the factory coolant hose that crosses over the driver-side valve cover. It opens up space for modifications and engine work, while also offering a much cleaner and more durable design.

Hot Side Intercooler Tube

Factory hot side tubes are known for failure at the lower intercooler boot. HSPs mandrel-bent 3" tube eliminates this weak point with a straight connection and improved flow—reducing turbulence and increasing airflow by up to 40%.

VGT Intake Mouthpiece

The stock intake mouthpiece restricts airflow and can allow leaks. HSPs larger, handmade mouthpiece improves airflow significantly and uses an O-ring seal to ensure a tight fit and eliminate unfiltered air from entering the turbo.

Cold Air Intake

With a 4.5" mandrel-bent tube and a high-quality air filter, this intake is designed to draw in cooler air using HSPs heat shield box. It delivers noticeable dyno gains—averaging a 20 HP and 58 lb-ft torque increase—without tuning.

Factory Replacement Coolant Tank

The factory plastic tank discolors and cracks over time. HSPs aluminum tank is CNC-bent, hand-welded, and powder-coated for durability and a better look. It uses factory provisions and is a direct-fit upgrade with a low coolant sensor.

What's Included in the HSP Max Air Flow Bundle?

• 1x Hotside Tube (HSP-IN-207)
• 1x 4.5" Cold Air Intake Tube (HSP-IN-150-1)
• 1x Heatshield Box Lid (HSP-IN-746)
• 1x 4.5" Hole Heatshield Box (HSP-IN-748)
• 1x Fabricated Turbo Inlet (HSP-IN-216-1)
• 1x Factory Replacement Coolant Tank (HSP-IN-709)
• 1x Billet Thermostat Housing Lower (HSP-IN-715)
• 1x Billet Thermostat Housing Upper (HSP-IN-716)
• 1x Radiator Hose Tube w/ Logo (HSP-IN-229)
• 1x Upper Fan Shroud Bracket (HSP-IN-714)
• 1x Oil Fill Neck Tube (HSP-IN-717)
• 1x 4.5" Filter (RFB-413-RFAB)
• 1x Radiator Cap (RFB-806-RFAB)
• 1x Thermostat Housing O-Ring (RFB-719-RFAB)
• 4x M8x1.25-25mm Socket Cap Bolt (RFB-909-RFAB)
• 4x M6x1.0-18mm Socket Cap Bolt (RFB-913-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 Turbo Inlet O-Ring (RFB-628-RFAB)
• 18x 3/8" Heater Hose (RFB-395-RFAB)
• 2x 1/2" Worm Gear Clamp (RFB-405-RFAB)
• 4x 1 3/4" Worm Gear Clamp (RFB-408-RFAB)
• 1x 1.75" 90° Boot - Rubber (RFB-433-RFAB)
• 1x 1.75"x3" Straight Boot - Rubber (RFB-437-RFAB)
• 1x Metric Bonded Seal 14mm (RFB-455-RFAB)
• 1x M14x1.5 to 3/8" Hose Barb (RFB-692-RFAB)
• 1x M14x1.5 Metric Port Plug (RFB-969-RFAB)
• 14x 1/2" Heater Hose (RFB-400-RFAB)
• 2x 1/2" Worm Gear Clamp (RFB-405-RFAB)
• 1x 1" Worm Gear Clamp (RFB-406-RFAB)
• 1x RFB-459-RFAB - LB7-LMM Low Coolant Sensor (RFB-459-RFAB)

Compatibility

This bundle fits:

• LBZ: 2006-2007 (VIN Code 2 or D)

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

Overview

• Increased performance and efficiency
• High-flowing cold air intake
• 3" hot side intercooler tube
• O-ring sealed VGT intake mouthpiece
• Billet aluminum thermostat housing
• Powder-coated replacement coolant tank
• All components emissions-friendly
• More value with bundle pricing

Our Warranty

HSP "NO BS" Limited Lifetime Warranty

At HSP, we believe in our products and stand firmly behind everything that leaves our facility. For years, weve gone above and beyond for our customers—even without a formal policy. Now, our No BS Warranty puts it in writing so you know exactly what to expect.

For full details, read the HSP Limited Lifetime Warranty.