04-05 Duramax LLY HSP Y-Bridge Kit For Factory Intercooler Pipe

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  • Regular price $576.81


**2-4 Week Build Time Normally**

Increase performance and flow with our upgraded 3" Max Flow Bridge. Our precision CNC machined bridge section allows for maximum efficiency, as well as a perfect fit every time. This component is designed to not only increase efficiency of your Duramax but also provide a solution to the factory unit, which is very restrictive and known to have boost leaks.

This kit comes with a 2.25" to pair with the factory cold side.


  • High strength silicone Boots
  • Industrial strength stainless steel T-bolt clamps
  • Precision CNC machined billet bridge section
  • 3'' Mandrel bent tubing for best efficiency


  • LLY: 04.5-05 VIN Code 2


  • Increased Performance and spool up
  • Powder coating option to dress up engine bay
  • Two piece bridge design allows for easier install than other Y-bridge kits on the market
  • Versatile neck location allowing for multiple cold-side options


Ask a Question
  • Will this Y-bridge work with factory intercooler pipe?

    Yes you can use stock intercooler tube or and aftermarket one also.

  • Will this y bridge work with the LLY s400 kit if I decide to buy the rest of the kit later on ?

    They use a lb7 style bridge on s400 install, this would not work good

  • Will this work with a sinister diesel egr delete intake tube? I need a y bridge the factory one that blows out and I’m wondering if this will work with the sinister diesel full egr delete that I did on my 2004 lly Duramax. Thanks

    The Sinister EGR Delete will work with it, the HSP Y bridge will replace the blue sinister intake tube, but you will still need to use the sinister hardware.

  • Does it have the o-rings included with the pipe as I don't see them in the included pieces or in the picture.

    Yes it does come with all hardware needed to install

  • Does it matter on what turbo mouth piece your have

    Do this will work with: Stock, AFE, or S&B mouthpieces or also the LBZ Mouthpiece (stock or aftermarket)

  • I have a banks intercooler and pipes that are 3 inches. Can I get a boot that connects your Y bridge to banks 3 inch pipe?

    Yes Just include a note at checkout for 3" coupler and we can make sure that you get the correct one.