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Kooks 3 in. High Flow Catted Y-Pipe (14-18 6.2L Sierra 1500 w/ Long Tube Headers)

Item S500727
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Fits the OEM Outlet for Stock Exhaust
      • Includes Race Catalytic Converters
      • Only for Use with Kooks Headers
      • Stainless Steel
      • 3” Diameter Pipe
      • Requires Kooks Long Tube Headers
      • Fits 2014-2018 6.2L GMC Sierra's


      Empower Your Truck for the Races. Much of what you have to tune up to get your 6.2L GMC Sierra ready for the race is located under the hood. Don't forget about your exhaust system. Your engine's ability to efficiently release exhaust affects performance on and off the race track. This Kooks 3 in. High-Flow Catted Y-Pipe equips your vehicle for speed and power.

      Integrated System Design. Made to fit the OEM outlet for stock exhaust, this system integrates seamlessly into your truck's make. It must be used along with Kooks Headers, which are also high-performance. The pipe includes catalytic converters that are also high-flow and race ready.

      Smart Construction. To endure the challenges of racing, this pipe is made of strong stainless steel. It is 3 inches in diameter to offer plenty of space for exhaust to escape at a high-flow rate.

      Application. This Kooks 3 in. High Flow Catted Y-Pipe is designed to be used on the 2014-2018 6.2L GMC Sierra's equipped with a set of Kooks Long Tube Headers.

      Fitment: 2014 2015 2016 2017 2018 Details

      MPN# 28613200

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (1)

      Write a Review

      Ratings Summary

      5 out of 5 overall rating from 1 customers

      Installation Time: Afternoon

      • December 13, 2018

        5 2018 LTZ - TerryR Installation Time: Afternoon


        Installed this y pipe along with Kooks headers and Borla cat back exhaust (Borla Atak was really loud so I changed to S-type) on 6.2 1500 Chevy. Amazing power adder and driving normally over the road and not getting into the throttle, at all. Got 28.4 mpg on 400 mile trip, according to the pickup.

        Helpful (6)

      Questions & Answers (1 answers)

      1 Top Rated Question

      Does this connect with the factory exhaust after cats?

      • This would be for use with Kooks long tube headers and would be replacing the cat portion of the exhaust. 

      Helpful (0)
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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Y-Pipe

      Will It Fit My Sierra 1500

      • 6.2L V8 - 14, 15, 16, 17, 18

      Requires the use of Kooks Long Tube Headers for installation.

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