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Kooks 3 in. Off-Road Y-Pipe (14-18 5.3L Sierra 1500 w/ Long Tube Headers)

Market Price $570.77 You Save 12% ($65.67)
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  • Item S500722

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Ship to: Ashburn - 20149
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    Features & Details

    • Attaches to Stock Exhaust
    • Stainless Steel Construction
    • For use with Kooks Long Tube Headers
    • 3" Diameter Tubing
    • Fits 2014-2018 5.3L GMC Sierra's
    Gain a More Power. Your Sierra needs all the power it can get. By installing this Kooks 3 in. Off-Road Y-Pipe, you free up more engine power because more exhaust can escape quickly, especially since the Y-Pipe does not contain catalytic converters.

    Smart Design. Fashioned with a 3-inch wide diameter, this pipe offers plenty of space for a fast and high-flow of exhaust. The Y-Pipe is made of stainless steel for rugged durability as well.

    Precise Integration. Made for an exact fit on your Sierra, this Y-Pipe hooks up to the stock Cat-back exhaust point of the OEM outlet. It's used only with Kooks Long Tube Headers for high-powered function and a secure fit.

    Application. Legal in 49 states excluding California, this Kooks 3 in. Off-Road Y-Pipe is designed to fit on the 2014-2018 5.3L GMC Sierra's equipped with a set of Kooks Long Tube Headers.

    Fitment: 2014 2015 2016 2017 2018 Details

    MPN# 28603100

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Y-Pipe
    Installation Info
    Will it fit my Sierra?

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    Questions & Answers (2)

    2 Top Rated Questions

    On these y pipes. They do have the spots to put the O2 sensors back in?

    does kooks or other brand offer y pipe to connect to stock manifolds? with or without cats ? my stock y pipe has 3 cats . would it help to eliminate 3rd cat ? has o2 sensors in front and behind front 2 cats . or eliminate all 3 cats? 2018 5.3 silverado

    • At this time we do not offer any Y pipes that connect to the stock manifolds. Horsepower gains removing the cats have been shown to be very minimal on stock and lightly modified Silverados, typically netting 2-5hp. Heavily modified and supercharged Silverados due tend to get a much better benefit from cat removal.

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