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Kooks 3 Inch High Flow Catted Y-Pipe (07-08 4.8L, 5.3L, 6.0L Sierra 1500 w/ Long Tube Headers)

Item S500724
AmericanTrucks no longer carries the Kooks 3 Inch High Flow Catted Y-Pipe (07-08 4.8L, 5.3L, 6.0L Sierra 1500 w/ Long Tube Headers). Please check out 2019-2021 GMC Sierra Mid-Pipes for an updated selection.
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    Product Information

    Features, Description, Q&A, Specs & Installation


    • Enhances Performance
    • Improves Flow
    • Wide 3” Diameter
    • Stainless Steel Piping
    • Race-Level Catalytic Converters Included
    • Requires Kooks Long Tube Headers
    • OEM Outlet for Use with Stock Exhaust
    • Fits 2007-2008 4.8L, 5.3L or 6.0L GMC Sierra's


    Better Exhaust Flow. If your engine is working hard, like it does when used for racing applications, it needs to be able to release a lot of exhaust. With this Kooks 3 in. High-Flow Catted Y-Pipe, it can. Designed to improve exhaust flow, this Y-Pipe is legal everywhere except California.

    Quality Construction. A Y-Pipe intended for racing and sports applications must be sturdy to withstand all of the challenges of wild roads and rough riding. That's why this Y-Pipe is made from strong stainless steel.

    Fits Precisely. Featuring a wide 3-inch diameter, this Y-Pipe still connects with the OEM outlet for stock exhaust. The precise fit increases the quality of the high-performance enhancement resulting from this Y-Pipe. The pipe also includes race-quality catalytic converters.

    Application. This Kooks 3 in. High-Flow Catted Y-Pipe is specifically designed to be used on the 2007-2008 4.8L, 5.3L or 6.0L GMC Sierra's equipped with a set of Kooks Long Tube Headers.


    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (1) Y-Pipe w/ Cats

    Questions & Answers

    10 More Questions

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