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Kooks 3 Inch Green Catted Y-Pipe (09-13 4.8L, 5.3L Sierra 1500 w/ Long Tube Headers)

Item S500730
AmericanTrucks no longer carries the Kooks 3 Inch Green Catted Y-Pipe (09-13 4.8L, 5.3L 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


    • Better Performance, Horsepower, and Torque
    • Aggressive Exhaust Note
    • Mandrel-Bent and 16-Gauge Stainless Steel Tubing
    • 3” Inlet; OEM Outlet
    • EPA Certified Green Catalytic Converters - Not Legal in California
    • Connects to Stock Cat-back Exhaust
    • For Use with Kooks Long Tube Headers
    • OEM Outlet for Use with Stock Exhaust
    • Fits 2009-2013 4.8L and 5.3L V8 GMC Sierras


    Better Performance. Get more power behind your Sierra's back wheels when you install the Kooks Green 3-inch Catted Y-Pipe that features 49-state EPA certified green catalytic converters. The upgrade, which requires the corresponding Kooks Long Tube Headers, will provide better exhaust flow for more horsepower and torque.

    The Sound You Crave. This Kooks Green Catted Y-Pipe delivers clear, aggressive sound once connected to the stock exhaust, thanks to the "Y" crossover design of the pipe. In addition to the great sound, you'll love the sharp look of the stainless steel tubing and mandrel-bent, 16-gauge construction. Your vehicle will experience gains in horsepower and torque, making you the most envied driver on the road.

    Installation. Installing the 25-pound Catted Y-Pipe with 3-inch inlet requires connecting the matching Kooks Long Tube Headers to your truck's OEM catback exhaust. Kooks designed this product with an OEM outlet for an easy installation and a great fit. Refer to the included installation guide while performing the upgrade.

    Application. The Kooks 3-inch Green Catted Y-Pipe is made for 2009 to 2013 4.8L or 5.3L V8 GMC Sierras, and requires the matching Kooks Long Tube Headers (sold separately). This product is not California legal.


    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (1) Catted Y-Pipe

    Questions & Answers

    10 More Questions

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