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USD 625 625 690
Part #:

HSP LLY/LBZ Max Flow Bridge and Cold Side Tube (Over Alt.)

2006-2007 GM 6.6L Duramax LLY/LBZ
Part #:
FROM 625

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Engineered for performance, the HSP LLY/LBZ Max Flow Bridge and Cold Side Tube (Over Alt.) supplies your 2006-2007 GM 6.6L Duramax LLY/LBZ with quality airflow. The Max Flow Bridge and Cold Side Tube has a two piece design that allows for an easier installation. Designed for maximum airflow, the Max Flow Bridge and Cold Side Tube (Over Alt.) is casted with precision and CNC machined. The mandrel bent 3” Cold Side Tube combines with the Y Bridge for superior efficiency, airflow, and performance. Included with the Max Flow Bridge and Cold Side Tube (Over Alt.) are two M8 studs, 12-point nuts, and a high-strength O-ring that holds the 3” bridge together and eliminates boost leaks. The Max Flow Bridge and Cold Side Tube (Over Alt.) is proudly made in the USA and come sin multiple color options for a custom look.

  • 4” Intake Tube
  • Made In The USA
  • Multiple Color Options
  • Engineered For Performance

Product Options

307-HSP-W White
307-HSP-SB Satin Black
307-HSP-RAW Raw
307-HSP-O Orange
307-HSP-GB Gloss Black
307-HSP-DG Dark Grey
307-HSP-CR Candy Red
307-HSP-CP Candy Purple
307-HSP-CB Candy Blue
307-HSP-BR Blood Red


  • Manufacturer Name HSP
  • Shipping Weight 14.00 lb.
  • Shipping Length 24 in.
  • Shipping Width 16 in.
  • Shipping Height 10 in.
  • Fuel Type Diesel
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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XDP continues to closely monitor the COVID-19 (Coronavirus) outbreak. As an integral part of the automotive supply chain, at this point all call centers and distribution centers remain fully operational to ensure we keep vital service components flowing to vehicles used in transport of goods and emergency response. To ensure the health of our employees, families, and customers, we have made the following procedural changes:

  • UPDATE: Effective 6/1 Customer Service resumes normal business hours of M-F 8:30 – 9:00pm EST.
  • Effective 3/18 we have decided to temporarily close both of our retail stores in NJ and NV.
  • Our technical sales team remains available Mon-Fri 8:30am-9pm and Saturday 10:30am-7pm EST.
  • All employees have been encouraged to follow the CDC's recommendations at home and in the workplace.
The circumstances of this virus are fast moving, as such, we will continue to update you with any further operational adjustments as needed. As always, we value your business and appreciate your patience as we manage this situation together.
Emissions Notice

This product is not legal for sale or street use in California. Certain aftermarket products are subject to governmental emission standards regulated by the California Air Resources Board. In order for these products to be legal on a specific vehicle in California, the part number must receive a CARB Executive Order (EO) number. This number makes the part legal for use only on specific years, makes and models of vehicles. A decal with CARB EO number for these parts must be displayed in the engine bay to satisfy smog inspection requirements.