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MMD Radiator Extension Covers (15-17 GT, EcoBoost, V6)

Item 398225
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Market Price $149.99 You Save 13% ($20.00)
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$129.99 (kit)

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    Features, Video & Details

    • Sleek Custom Under Hood Appearance
    • ABS Plastic Construction
    • Textured Matte Black Finish
    • Simple Installation
    • Fits 2015-2017 V6, EcoBoost and GT Mustangs

    Review & Installation Video

    Review & Install Video

    Custom Show Car Styling. Give your S550 Mustang a sleek custom under hood appearance with a set of MMD Radiator Extension Covers. These Radiator Extension Covers are a great and simple way to hide the unfinished appearance of your Mustang's engine bay.

    High Quality Construction. Manufactured from high quality acrylonitrile butadiene styrene (ABS), these MMD Radiator Extension Covers were designed using the original OEM CAD data from Ford to ensure a perfect fit. ABS is an extremely strong material that is known for its durability and heat resistance - making it ideal for use under the hood of you Mustang.

    Simple Installation. MMD's Radiator Extension Covers are designed to attach with the supplied push pins and 3M doubled sided automotive bonding tape for a quick and easy installation. No drilling or permanent modifications are required.

    Application. These MMD Radiator Extension Covers are designed to be a perfect fit on 2015-2017 V6, EcoBoost and GT Mustang models. Sold as a set of two, one driver side and one passenger side.

    Modern Muscle Design

    Fitment: 2015 2016 2017 Details

    MPN# 398225

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Left Extension
    • (1) Right Extension
    • (2) Large Push Clips
    • (2) Small Push Clips
    • (2) Alcohol Wipes
    • (2) Adhesion Promoter Packets
    Installation Info
    Will it fit my Mustang?

      Customer Photos (100+) Submit Your Photo

      View All 100+ Photos

        Questions & Answers (34)

        5 Top Rated Questions

        Will this fit 2015 GT mustang with an airaid box installed?

        • The MMD Radiator Extension Covers will have no issues working with the Airaid Cold Air Intake.

        Helpful (8)

        Will these MMD Radiator Extension Covers work on a 2018 Mustang GT?

        • The MMD Radiator Extension Covers have not yet been tested on 2018 models. Fitment will be updated once testing has been completed.

        Helpful (4)

        Why doesn’t this product available in Australia

        • Due to restrictions set by our third party shipping partner I-Parcel, some items are unavailable for international shipment.

        Helpful (3)

        When is MMD planning on making a version that will fit the 2018/2019 models?

        • At this time, we do not currently have an update on if this part will be available for the 2018/2019 Mustang models.

        Helpful (1)

        Will this fit a 2016 Mustang with a Ford Performance Cold Air intake?

        10 More Questions
        Mine are now cracking on the driver side and look funky. Is anyone else having the same problem? 0 answer
        Is it possible to purchase new push pins for these covers and new Velcro after a few em removal is for in grill work the push pins and Velcro are no longer good? Thanks 1 answer
        Hi guys!! I need your help. Please, can you give me the measurements of the box and weight to calculate international shipping costs. Thanks!! 1 answer
        Will this fit a 2015 V6 Mustang with an Roush Cold Intake (P/N 421828) installed? 1 answer
        Does this set up high and cause paint damage under the hood? 1 answer
        Repeat question but any word on whether these will be developed for the 2018 GT? 1 answer
        Will these fit along with the radiator cover you sell for 2017? The Ford Performance cover? 1 answer
        Does the manufacturer ever plan to release a 2018 version? 1 answer
        Will this work with the C L CAI? 1 answer
        Will they fit with a JLT CAI Box? 1 answer

          Customer Reviews (100+) Write a Review

          Ratings Summary

          4.6 out of 5 overall rating from 100+ customers

          • December 23, 2019

            4 2015 GT - Timbo

            Great Product Overall

            Great product, but the 3M tape on the panels don't stick very well, so you will need to get some more tape to keep the panels secured.

            Helpful (0)
          • December 18, 2019

            5 2016 GT - DavidL

            Extension covers

            I really like the look great quality and will not hesitate to buy and again.

            Helpful (0)
          • November 11, 2019

            5 2015 GT - Indygt


            Absolutely a easy install!! They look fantastic!! If you want a clean factory look these are what you need. So clean up the appearance under your hood.

            Helpful (0)
          • October 30, 2019

            5 2017 EcoBoost - Pengwinnin

            Here’s my review.

            While purchasing these covers I said I would post a review for them. I just installed them and they seem to work perfectly. I raised my bump stops for hood to a higher height to prevent rubbing, time will tell if it’s rubbing, if it is I will simply put a couple felt squares on roof of hood where they touch.

            Helpful (0)
          • October 24, 2019

            5 2015 GT - kwidener

            Simple but great

            This really a simple product but really cleans up the engine.

            Helpful (0)
          • October 21, 2019

            5 2015 EcoBoost - Amani

            Smooth Edge

            These add a smooth edge to my mustang. They help create a complete pack for my engine.

            Helpful (0)
          • October 21, 2019

            5 2016 EcoBoost - Ecobeast

            Nice quality and perfect fit!

            Picked up a set from AmM as I felt the Mustang's engine need a bit more covering. Shipping was decent but was very happy with components. I had a local shop, JackThaDipper, hydrodip these 2 panels plus the radiator support cover in an Autism Awsreness theme. The result was amazing and extremely well received from the Mustang community at a couple local shows. See more pics on our IG @eco4autism. We show in support of Autism Awareness.

            Helpful (0)
          • October 20, 2019

            5 2017 GT - Mybizz11

            Look good

            They fit perfectly and look great. Easy to install

            Helpful (0)
          • October 02, 2019

            5 2017 GT - Nicksandone

            Awesome product

            Totally love this addition to the engine bay. Installed in less than ten minutes and completely changed the look under the hood. The best part was, I ordered them on Wednesday, and received them Friday !!!

            Helpful (0)
          • September 28, 2019

            5 2016 GT - DanS

            GT upgrade

            Just upgraded my 2016 GT with a couple of items. Radiator extension covers and strut tower brace. Want to keep it functional and appearance pleasant.

            Helpful (0)
          • September 26, 2019

            5 2016 EcoBoost - DavidW

            Very sharp add on.

            Very easy install. A bit shorter than expected but still nice and on.

            Helpful (0)
          • September 20, 2019

            5 2015 GT - Carsont

            Looks Fantastic

            These look so good they could pass as a factory fit!

            Helpful (0)
          • September 20, 2019

            2 2017 GT - FastNLd



            Helpful (1)
          • August 30, 2019

            3 2016 V6 - Yellstone

            Radiator Extension Covers

            They look good but do rub against the hood in several places. I used 3 plies of yellow electrical tape to make small pads that blend well with hood.

            Helpful (2)
          • August 20, 2019

            5 2016 GT - MonsterMarine

            Very clean

            Love this item. It cleans up the engine compartment.

            Helpful (0)
          • August 18, 2019

            5 2017 GT - MarkS

            Small Mod but BIG appearance change

            Gives the engine bay a finished, factory look. Highly recommend.

            Helpful (0)
          • August 09, 2019

            3 2015 GT - Whipple15

            Won’t work with aftermarket hood

            I have a cervini hood and the fitment is off, the aftermarket hood has different bracing that hits causing the hood not close properly. Looks amazing wish it worked, starting return now.

            Helpful (0)
          • August 04, 2019

            3 2016 GT - MarkV

            Good quality fit could be better

            Original order came with two left side panels, kinda hard to make that work. They were quick to send out a replacement and install was easy. They DO rub on the underside of the hood in several spots I put small clear rubber bumpers on the hood and that eliminated the rubbing but not before it took the paint off.

            Helpful (1)
          • July 02, 2019

            4 2017 GT - Shinny

            Radiator Extensions

            I really like how the Radiator Extension Covers give the look of the Engine Bay being clean. The only draw back is they sit a little high so I have to take them off when closing the hood, otherwise they wear off the paint of the hood where it hits the extensions.

            Helpful (1)
          • June 27, 2019

            5 2016 GT - FrankD

            Great Covers at reasonable cost!

            These covers should come from factory, looks great!

            Helpful (0)