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Ford Performance Halfshaft Axle Assembly - Left Side (15-19 All)

Market Price $961.99 You Save 12% ($112.00)
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  • Item 384406

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    Features & Details

    • Ford Racing Upgraded Halfshaft Assembly
    • Anti-Wheel Hop Technology
    • CNC Machined from Aerospace High Alloy Materials
    • Billet One-Piece 34-Spline Inner and 32-Spline Outer Stub Ends
    • Intended for Off-Road Use Only
    • Left Hand - Driver Side
    • Sold Individually
    • Fits All 2015-2019 Mustangs with 8.8" IRS Rears
    Performance Upgrade. If your S550 Mustang is heavily modified or running forced induction, your stock half shafts might be too weak to take the additional punishment. But after installing Ford Racing axle half shafts with Anti-wheel hop technology you will be sure to get all your Pony's power and torque firmly planted to the pavement - where it belongs.

    Ford Racing Quality. Ford Racing Upgraded Axle Half Shafts are CNC machined from aerospace high alloy materials and feature billet one-piece 34-spline inner and 32-spline outer stub ends. The CV joints are severe duty serviceable units with CNC billet centers making them perfect for high stress street and race applications. Axle Half Shafts are completed in an Aerospace electrically bonded e-coating for long lasting corrosion resistance.

    Application. This Ford Racing Driver Side Axle Half Shaft is specifically designed for use on the 2015-2019 S550 Mustangs that are equipped with the stock 8.8" Independent Rear Suspension (IRS), including V6, EcoBoost and GT models. Sold individually. Intended for off-road use only.

    Fitment: 2015 2016 2017 2018 2019 Details

    MPN# M-4139-MA

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Left Hand - Driver Side Half Shaft Axle Assembly
    Installation Info
    Tech Specs
    Will it fit my Mustang?

      Customer Photos

        Questions & Answers (1)

        1 Top Rated Question

        What is the horsepower rating for these halfshafts? In rwhp or crank?

        • These are rated at 1,000+ hp at the wheel.

        Helpful (0)
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          Customer Reviews (3) Write a Review

          Overall Rating 5

          out of 5 stars

          • 5/5

            February 15, 2019

            Good. Quality part and easy install.

            The part fits well and the quality appears to be very good,installation was a breeze.


            Year: 2016 Submodel: GT

            Helpful (1)

          • 5/5

            December 21, 2016

            Ford Perfromace

            I ordered a set about a year ago and had them installed in March of 2016. They were labeled left and right on each axle and decided to have Asheville Ford install them. I broke the left shaft I decided to give it another try so I ordered another left side when it came in I notice the left side was longer than the left that was originally sent when I started looking in to this I notice that Ford sent me two right shafts the first time around however they were labeled correctly. Asheville Ford $ Ford Performance if my left side broke while I was at a 1/2 mile even or better yet at the Texas mile in March of 2017 and it broke because a stupid mistake this could have totaled my car or perhaps caused my death. Ford Performance I have picture to back my claim up but I'd say you need better checks and balances before you ship product.


            Year: 2015 Submodel: GT

            Helpful (14)

          • 5/5

            March 26, 2016


            This half shaft is a beautiful piece of work. Much heavier than stock and super easy to install. Only took maybe 1.5 hours to install. Took longer to find the torque specs then anything.


            Year: 2015 Submodel: GT

            Helpful (17)

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