HSP Diesel Max Flow Bridge and Cold Side Tube - Behind Alternator Style 004-HSP | 2006-2010 Duramax 6.6L LBZ/LMM

The HSP Max Flow Y-Bridge and Cold Side Tube kit is a performance-focused upgrade for LBZ and LMM Duramax trucks. This complete kit combines a high-flow intake bridge with a mandrel-bent cold side tube to eliminate factory restrictions and improve airflow efficiency. Perfect for both stock and modified trucks, this setup supports higher boost levels while maintaining OEM-style fitment and durability.

Fitment:

• LBZ: 2006–2007 (VIN Code 2 or D)
• LMM: 2007.5–2010 (VIN Code 6)

Kit Includes:

• 1x Bridge Section (HSP-IN-220)
• 1x Coldside Behind Alternator Tube (HSP-IN-202)
• 1x Bridge Neck (HSP-IN-743-2)
• 1x Bridge Neck O-Ring (RFB-670-RFAB)
• 1x 1/8" NPT Brass Plug (RFB-811-RFAB)
• 2x Bridge Neck Studs (RFB-902-RFAB)
• 2x Bridge Neck 12-Point Nuts (RFB-903-RFAB)
• 24x 5/8" Heater Hose (RFB-401-RFAB)
• 2x 5/8" Worm Gear Clamps (RFB-403-RFAB)
• 4x 3" T-Bolt Clamps (RFB-422-RFAB)
• 2x 3"x4" Straight Boots (RFB-430-RFAB)

Benefits:

• Eliminates factory intake restrictions
• Supports higher boost levels for modified trucks
• OEM-style fitment ensures reliability and durability
• Improves airflow for better performance and throttle response