HSP Diesel Max Flow Bridge to HSP Diesel Cold Side for 2004.5-2005 Chevrolet and GMC LlY Duramax

HSP Max Flow Bridge to HSP Cold Side for 2004.5-2005 Chevrolet / GMC Duramax LLY

Part Number: 206-1-HSP

The 206-1-HSP, also known as the Max Flow Bridge to HSP Cold Side for the 2004.5-2005 LLY Duramax-equipped Chevrolet and GMC trucks, is a performance-enhancing upgrade that integrates seamlessly with HSPs Cold Side Tube system.

Why Choose the Max Flow Bridge to HSP Cold Side?

The factory bridge and cold side piping on LLY trucks are restrictive and prone to boost leaks. Many owners prefer to upgrade these components as needed rather than replace factory parts that are known failure points. This Max Flow Bridge eliminates those issues by delivering improved airflow and durability.

What Makes This Bridge Kit Different?

This Max Flow Bridge is engineered to work exclusively with the HSP Cold Side Tube. Because HSPs Cold Side design alters both routing and diameter, the bridge is crafted to accommodate those changes while maximizing efficiency. It features a two-piece 3" diameter design to eliminate boost leaks and improve fitment. Each unit is precision cast and CNC machined for maximum performance and flawless installation.

Whats Included

• 1x Bridge Neck (HSP-IN-209)
• 1x Bridge (HSP-IN-222)
• 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)
• 24x 5/8" Heater Hose (RFB-401-RFAB)
• 2x 5/8" Worm Gear Clamp (RFB-403-RFAB)
• 2x 3" T-Bolt Clamp (RFB-422-RFAB)
• 1x 3"x4" Straight Boot (RFB-430-RFAB)

Special Note

This part is designed to fit with the HSP Cold Side Tube only. If you need a Max Flow Bridge that works with the factory cold side, please use part number 206-HSP instead.

Fitment

• LLY: 2004.5-2005 (VIN Code 2)

Note: The engine code is identified by the 8th character of the VIN, and the model year is shown by the 10th character.

Overview

• Increased performance and faster spool-up
• Precision cast and CNC machined for perfect fit
• 3" diameter flow path
• High-strength 5-layer silicone boots
• Powder coating options for a custom engine bay look
• Compatible with HSP Cold Side Tube only

Our Warranty

HSP NO BS LIMITED LIFETIME WARRANTY

At HSP, we believe in our products and stand firmly behind every single one that leaves our facility. For years, weve resolved nearly every issue customers encountered—even without a formal warranty. Now, weve taken that commitment to the next level with our "No BS" warranty, offering clear protection and a straightforward claims process.

Click here to learn more about our Lifetime No BS Warranty