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Kooks 3 in. High Flow Catted Y-Pipe (09-13 4.8L, 5.3L Sierra 1500 w/ Long Tube Headers)

AmericanTrucks no longer carries the Kooks 3 in. High Flow Catted Y-Pipe (09-13 4.8L, 5.3L Sierra 1500 w/ Long Tube Headers). Please check out 2007-2013 Sierra 1500 Exhaust Pipes for an updated selection.

Features & Details

  • Attaches at OEM Outlet
  • Race Catalytic Converters Included
  • High-Flow Design
  • Stainless Steel Build
  • Use with Kooks Long Tube Headers Only
  • OEM Outlet for Use with Stock Exhaust
  • Fits 2009-2013 4.8L or 5.3L GMC Sierra's
High-Performance Perfection. Making upgrades to your 4.8L or 5.3L Sierra can boost its performance, helping it achieve its highest potential. For a big power boost, install this Kooks 3 in. High-Flow Catted Y-Pipe. Increasing exhaust flow and efficiency, this pipe is used with Kooks Headers only.

Outflow the Competition. Due to its high-flow design, this Pipe gets exhaust out faster so that your engine can run more powerfully. It has a diameter of 3 inches for width that offers plenty of space for the high outflow design. Racing catalytic converters are included to help the high-flow process.

Seamless Integration. Intended to integrate into the existing OEM exhaust system, this pipe fits the stock exhaust outlet. It is used with Kooks Headers for optimum performance enhancement. The pipe is made from stainless steel for a durable fit with the existing system.

Application. This Kooks 3 in. High-Flow Catted Y-Pipe is specifically designed to be used on the 2009-2013 4.8L or 5.3L GMC Sierra equipped with a set of Kooks Long Tube Headers. This Y-Pipe is not legal in California.

Fitment: 2009 2010 2011 2012 2013 Details

MPN# 28553200

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

What's in the Box
  • (1) Y-Pipe w/ Cats
Installation Info
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        Customer Reviews (1) Write a Review

        Overall Rating 5

        out of 5 stars

        • Loudness / Volume 5 5
        • Exhaust Note 5 5
        • Fit & Finish 5 5
        • Bang For Your Buck 4 4



        • 5/5

          December 05, 2018

          Great Y-Pipe

          I have the long tube headers along with the y-pipe And a Borla cat back exhaust it sounds Awesome !!!! but I need to put a tune in it now because the engine light comes on since Iv'e put all of this on.

          BrianG

          Year: 2012 Submodel: SLE Engine: 5.3L V8

          Helpful (4)

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