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Magnaflow MF Series Dual Exhaust System - Side Exit (14-18 4.3L Sierra 1500)

Market Price $1,078.58 You Save 12% ($124.08)
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  • Item S502349

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    Features & Details

    • Stainless Steel Construction
    • All Mandrel-Bent
    • Gains in HP and Torque
    • Lifetime Warranty
    • Straight-Through Flow
    • Better Fuel Economy
    • Smooth, Deep Growl
    • Fits 2014-2018 4.3L GMC Sierra Models
    Magnaflow. Engineered to last, the MF Series Cat-Back Exhaust - Split Side Exit will give your 2014-2018 4.3L GMC Sierra better performance, economy, and that smooth, low growl you crave. Wide-open performance, straight-through flow, unrestricted horsepower and torque—that's the Magnaflow difference.

    Durability and Strength, Without the Noise. All mandrel-bent and made with 409 stainless steel, this Magnaflow cat-back is made to withstand whatever you put it through—from rugged off-road trails, to the paved open road. This system is an engineered balance of interior and exterior noise levels and is tested against SAE J1169 standards.

    Hassle-Free. Installation has never been easier with this hassle-free, bolt-on design. In two hours or less, you can have your GMC Sierra back on the road and purring. Magnaflow backs this with an equally hassle-free lifetime warranty on construction.

    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.

    Fitment: 2014 2015 2016 2017 2018 Details

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Magnaflow MF Series Cat-Back Exhaust Kit
    • All Necessary Parts and Hardware
    • Installation Instructions
    Installation Info
    Tech Specs
    Will it fit my Sierra?

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    Questions & Answers (4)

    4 Top Rated Questions

    Will this system work on a 6.2l ?

    • Magnaflow lists this exhaust to be specific to the 5.3L options, they do not show fitment for the 6.2L.

    Helpful (0)

    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:

    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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