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Magnaflow MF Series Dual Exhaust System - Side Exit (14-18 5.3L Sierra 1500)

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    Features & Details

    • Improves Horsepower and Torque
    • Throaty Exhaust Note
    • Durable 409 Stainless Steel Construction
    • 3" Diameter Mandrel-Bent Tubing
    • 4" Polished Stainless Steel Tips
    • Dual Rear Exit
    • Direct Bolt-On Installation
    • Made in the USA
    • Fits All 2014-2018 5.3L GMC Sierra Models
    The Magnaflow Advantage. When you buy Magnaflow, you not only get better fuel economy and efficiency, but you also get that smooth, deep growl you've been wanting for your GMC Sierra 1500. Made in the USA, this cat-back exhaust features a straight-through flow design, giving you the ultimate increase in horsepower and torque.

    Max Durability. Made from durable and strong 409 stainless steel and mandrel-bent 3 inch-tubing, your new Magnaflow MF Series exhaust is made to last. It is backed by a lifetime warranty on construction—giving you the peace of mind that this exhaust will last the life of your truck. The polished tips add a little style as well.

    Install in no Time. Offering an easy bolt-on design, your new cat-back exhaust will take approximately two hours to install and includes all the necessary parts and hardware to do so. Should you need any assistance, installation videos are available on the website.

    Application. This Magnaflow MF Series Split Side Exit Cat-Back Exhaust is designed to be used on the 2014-2018 5.3L GMC Sierra's with the following cab and box configurations.
    • Regular Cab with the Standard Box
    • Double Cab with the Standard Box
    • Crew Cab with the Short Box.

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) Intermediate Pipe
    • (1) Muffler Assembly
    • (1) Driver Side Extension Pipe
    • (1) Passenger Side Extension Pipe
    • (1) Driver Side Tailpipe
    • (1) Passenger Side Tailpipe
    • (2) Exhaust Tips
    • (1) Hanger
    • (1) Rubber Insulator
    • (7) Clamps
    Installation Info
    Tech Specs

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    Questions & Answers (3)

    3 Top Rated Questions

    Just wondering if this is a full 3" inch in/dual out?

    • This would be a full 3" mandrel bent tubing yes.

    Helpful (0)

    Does this kit require any welding to be installed?

    • We do recommend having the tips welded into place and for review we have a whole install guide for you here: https://www.americantrucks.com/magnaflow-mfseries-catback-splitside-1417-43l-gmc-manu-install.html

    Helpful (0)

    How much horse power and torque gain ????

    • With this cat-back exhaust, you can see up to a 3-5 HP/TQ increase.

    Helpful (0)
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