Welcome to our Fall Website Refresh. Beta testing in progress. Phone Number: 805-267-9762 This month's discount code: HALLOWEEK3 

Welcome to our Fall Website Refresh. Beta testing in progress. Phone Number: 805-267-9762 This month's discount code: HALLOWEEK3 

Hellhorse Performance 4″ to 8″ Plug ‘n Play Conversion Harness for Sync 3

*All images are for illustration purpose only. Actual product may vary
WARNING : Cancer and Reproductive Harm – www.P65Warnings.ca.gov.
FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. THE USE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3))

$249.00

Available

Hellhorse Performance 4″ to 8″ Plug ‘n Play Conversion Harness for Sync 3

After having many requests for this product we’ve finally made it available for purchase. This part is available for anyone who needs to upgrade their 2015-2018 Mustang with the 4” radio to Sync 3.

This is ONLY the Plug n’ Play wiring harness and includes wiring for the new Sync 3 system as well as retaining the backup camera and providing power to the new 4 pin USB hub.

This harness does not include any other parts or programming that may be required.

We do not offer any installation support on this product. If you are not entirely confident in your parts/installation and programming, please buy one of our fully Plug n’ Play kits.

This new and improved harness design comes with a lifetime warranty.

  • -Plug n’ Play harness for 4” base to Sync 3 8” conversion in 2015-2018 Mustangs and other vehicles.
  • -No splicing or cutting required
  • -Retains all factory features
  • -Retains backup camera
  • -SiriusXM Travelink will not work with this harness (regular SiriusXM radio will).
  • -Lifetime warranty for original purchaser

VEHICLE COMPATIBILITY:

This harness is fully compatible with the following vehicles

2015-2018 Mustang

2013-2017 F150 (w/4″ screen)

2017-2019 Super Duty (w/4″ screen)

2013-2018 Fusion

2015-2018 Edge

These are NON-RETURNABLE after shipping. Ensure compatibility before ordering. Please ask if you are not sure.

DISCLAIMERS: DO THIS AT YOUR OWN RISK. HELLHORSE PERFORMANCE IS NOT RESPONSIBLE FOR ANY DAMAGE YOU DO TO YOUR CAR. THE PROCESS IS OF LOW TO NO RISK BUT REMEMBER TO TAKE YOUR TIME AND BE CAREFUL WHEN MODIFYING YOUR MUSTANG.  THIS IS A NON-RETURNABLE/NON-REFUNDABLE PACKAGE.


We’ve got your back!

Function Factory Performance takes “customer service” very personally. We understand that finding the right parts can be overwhelming. Education and awareness are the principles that keep us ahead of the curve. Let us make this experience simple, easy, and excellent, so without hesitation, give us a call at (480) 576-8606. Feel free to direct message on our live chat or CLICK HERE to contact us via email.

Make sure to follow us on Instagram @FFPerformanceAZ and YouTube.

EMAIL A FACTORY SPECIALIST FOR HELP CALL A FACTORY SPECIALIST NOW

Reviews

There are no reviews yet

Be the first to review “Hellhorse Performance 4″ to 8″ Plug ‘n Play Conversion Harness for Sync 3”

Your email address will not be published. Required fields are marked *

Frequently Asked Questions

How long does it take for my parts to ship?
If it’s in stock and ready to roll, your order usually hits the road within 1–3 business days.

For made-to-order or specialty items (like carbon fiber parts or custom builds), the turnaround can take up to 8 weeks — perfection takes time.

Either way, we’ll keep you updated so you know exactly when your parts are leaving the pit lane.
Do you send tracking with my order?
Absolutely. Once your order ships, you’ll receive an email with a tracking link so you can follow its journey from our shop to your doorstep.

If your order ships via freight, you’ll get a separate email with a direct link to the carrier’s tracking page — easy and stress-free.
What happens if my parts get lost or damaged?
Things happen on the road — even to boxes. If your order arrives damaged, snap a few clear photos of the box and product and send them our way right away.

If your shipment is lost, just email or call us — we’ll help track it down and guide you through the next steps to make it right.
What can I do to help FFP?
Simple — spread the horsepower!

Follow us on Instagram, YouTube, and Facebook, and most importantly, drop us a review on Google or Yelp to let others know about your experience.

Your feedback helps us grow, create more content, and keep bringing performance-driven parts to the community.

1

Customer Support Specialist

Have a question about parts or your order? We're open Monday to Friday, 9:00 AM to 5:00 PM PST.

Your Product Is Guaranteed

Our #1 responsibility is to deliver your parts as quickly as possible.

Race Proven Knowledge.

The crew at FFP is built from real racers and car enthusiast.

Payments Verified

We verify every transaction to prevent fraud. Know that your information is safe.