04-10 Duramax HSP 3.5" Turbo Mouthpiece

  • Sale
  • Regular price $251.75


**3-4 Week Build Time Normally**

The HSP VGT Intake Mouthpiece is a perfect for anyone looking to increase, performance and the look of your engine bay. Our mouth piece is available in a variety of color options to suit your needs

05 LLY trucks must use LBZ style intake in order for mouthpiece to work (part#303-HSP)


    • LLY: 04.5-05 VIN Code 2 with lbz intake system.
    • LBZ: 06-07 VIN Code 2 or D
    • LMM: 07.5-10 VIN Code 6


    • Increased Performance and spool up
    • Powder coating option to dress up engine bay
    • Upgraded high strength silicone boots
    • Eliminates turbo resonator
    • Smooth sleek design eliminating the factory plastic unit
    • Many powder coat colors available

    Race Disclaimer:
    This is a Race Only product that is to be used solely for competition, it cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. To complete the purchase of this item you must agree to this at checkout.


    Cannot ship to California 


    Ask a Question
    • Will this work with the rpi 5” Intake?

      Yes It will

    • I ordered a 5 inch air intake from you guys will it work with this?

      Yes this will fit with our intake system

    • Can I still order this is shocker yellow? Was in the pictures but not an option to choose

      Yes you can get the shocker yellow as a custom color, it is $50 Extra that HSP charges for custom colors.

    • i have a 04 lly can i use the rpi lly intake for this or does it need to be lbz intake?

      Both of our lly or lbz intakes will work with this mouthpiece. 

    • What if you don’t have a vin code 7? Or aren’t sure, will the product not fit or work?

      It must be lly, lbz, or lmm engine for this to fit, if your stock turbo inlet bolts to Turbo with 3 bolts than you must have 01-04.5 lb7 engine, it will fit all 04.5-10 engines