(1 customer review)

    Easy Ford Fiesta 4" to 8" Sync 3 Upgrade Wiring Harness

    1 × 4" to 8" Sync to Sync 3 Upgrade Harness B

    27 in stock (can be backordered)


    27 in stock (can be backordered)

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    The NaviUpgrade Ford Fiesta 4" to Sync 3 Upgrade harness is perfect for the DIY-er who is looking to add Sync 3 to his or her Fiesta!

    We also offer FREE programming files with your purchase, something no other online store does. This allows you to get up and running quickly using an OBDII dongle, without messing around with a bunch of settings or hex codes in FORScan.

    Please feel free to check out our Guides tab for more information on what other hardware you'll need to complete your upgrade.

    We pride ourselves in providing the most value out of any online store when it comes to Sync 3 Upgrades. NaviUpgrade is constantly working on building out resources for our customers and fans to use on their own vehicles. Our goal is to empower all vehicle owners to feel comfortable upgrading their own vehicles.


    This harness will work for a 4" to 8" Conversion, also known as the Sync 1 to Sync 3 Upgrade for any base model 2013-2019 MK7 Fiesta. Trim level does not matter as long as you have 4" Sync 1 or an EU Equivalent. This harness is not for EU MK 8 Fiestas.Please be aware that this conversion harness and programming file combination will not work on vehicles other than a 2013-2019 Fiesta.
    Shipping & Delivery
    Free 2-3 Day Delivery for all US Purchases

    Flat $50 Fee for International Shipments
    If shipping costs more, we cover the cost, if it costs less, you get reimbursed the difference.

    1 review for Easy Ford Fiesta 4" to 8" Sync 3 Upgrade Wiring Harness

    1. Mr.YODCHAI SOWAPAS (verified owner)

      Received the product successfully wait for installation If installed successfully, I will review it again. Thank you.

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    Brian Lovelace

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