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Ford Performance Differential Cover - 8.8 in. (11-14 V6; 86-14 V8, Excluding 03-04 Cobra & 13-14 GT500)

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  • Item 50240

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    Features, Video & Details

    • Increases Strength, Prevents Side Load Bearing Deflection
    • Light-weight Cast 356T6 Aluminum Construction
    • Low Profile Design with Bearing Cap Support
    • Dissipates Heat - Increase Gear Life
    • Features Engraved "Ford Racing" Logo
    • For use on 8.8" Solid Axles
    • 10 Bolt Cover
    • Direct Bolt-on Replacement
    • Fits 1986-2014 8.8" Equipped Mustangs, Excludes 03-04 Cobra and 13-14 GT500

    Review & Installation Video

    Review & Install Video

    Stronger Than Stock. When upgrading the rear gears in your Mustang it's also a good idea to replace the wimpy stock differential cover with a super strong, Aluminum Differential Cover for additional safety and peace of mind. This low profile Ford Racing Differential Cover features load bolts that provide additional support for the differential bearing caps which prevent side-to-side deflection.

    Cast Aluminum Construction. Made in the USA Ford Performance manufactures their Low Profile Differential Cover from 356T6 cast aluminum for superior strength and light-weight. The 356T6 aluminum construction helps to dissipate heat much quicker than the stock unit, which in turn helps to prolong the life of your Mustangs ring and pinion gears. As an added bonus the Cover has the "Ford Racing" logo engraved directly on it. 

    Direct Bolt-On Installation. Ford Performance designed their Differential Cover to be a direct bolt-on upgrade for your Mustangs factory differential cover. With the included gasket, bolts and washers this Cover can be installed in about an hours’ time.

    Recommended Upgrade. When changing your differential cover it is recommended to upgrade to fresh Royal Purple Synthetic Gear Oil. You will require 3 quarts of Gear Oil.

    Application. This Ford Racing Differential Cover is designed to fit the 1986-2014 Mustangs equipped with an 8.8" solid rear axle, including the 2011-2014 V6, 1986-2014 GT, Bullitt, Mach 1, 1993-1998 SVT Cobra, and 2007-2012 Shelby GT500 models.

    Application Note. This Ford Racing Differential Cover will

    not fit 1999-2004 SVT Cobras equipped with an Independent Rear Suspension (IRS), or 2013-2014 Shelby GT500 models.

    Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

    MPN# M-4033-G2

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    Hardware included:
    • (1) Axle Girdle Assembly
    • (1) Axle Girdle Gasket
    • (10) Washers
    • (10) Bolts
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Boss 302 - 12, 13
    • Bullitt - 01, 08, 09
    • Cobra - 93, 94, 95, 96, 97, 98
    • Cobra R - 93, 95, 00
    • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
    • GT500 - 07, 08, 09, 10, 11, 12
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Mach 1 - 03, 04
    • Other - 79, 80, 81, 82, 83, 84, 85, 86
    • V6 - 11, 12, 13, 14

    Fits Mustangs equipped with a 8.8" rear end only. Does not fit 1999-2004 IRS equipped Cobras or 2013-2014 GT500 models.

      Customer Photos (96) Submit Your Photo

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        Questions & Answers (19)

        5 Top Rated Questions

        How much fluid does does rear end take with this cover?

        • You will need 3 quarts of gear oil when using this Ford Performance Differential Cover.

        Helpful (2)

        Is that a fill and drain plug on the cover? I know that there is a fill plug on the other side of the diff from factory but hard to get at, so this would make it easier if it is. Also do you offer something to make getting the oil into the case easier?

        • The Ford Performance Differential Cover has a fill port on the upper passenger side of the cover, a drain on the lower passenger side, and two adjusters for the braces on both sides on the raised section. We do not offer anything that helps with filling the diff, however a section of tubing on the bottle can be used to help in filling the diff, or a fluid transfer hand pump.

        Helpful (1)

        When installing this diff cover, can I use silicone instead of the gasket it comes with? I've heard the diff starts leaking quickly with the gasket. Thanks.

        • When installing the Ford Performance Differential Cover you can utilize the existing gasket, RTV silicone sealant, or a combination of the two. If using an RTV sealant, we recommend utilizing a RTV Black sealant such as that offered by Permatex, or equivalent.

        Helpful (1)

        Will this cover clear all aftermarket panhard bars and sway bars? Even on lowered cars?

        • This cover will clear after market sway bars, panhard bars, and the car being lowered yes!

        Helpful (1)

        will this fit with 4.10 gears?

        • I have a 2005 Mustang with 4.10 gears and this fit perfectly.

        Helpful (1) Show 3 more answers
        Post Your Question
        10 More Questions
        Are there any clearance issues with the spare tire well in a Fox body or an MM Panhard bar? 1 answer
        Where is the drain plug? Is in the small black plug at the bottom right? 1 answer
        will this fit a 2013 F150 8.8 front diff? 1 answer
        Will this differential cover work with the BMR Hammerstone watts link? 0 answer
        Will this cover work with 4.56 gears? Thanks God bless! 1 answer
        Will this clear whiteline sway bar and whiteline panhard bar? 1 answer
        Does it work with 4.10 2008 mustang gt 1 answer
        I am going to change my diff.cover(GT/CS '08) and already bought 2 quarts of oil and bottle o friction modifier.You just wrote it is enough amount of liquid and in other sites it Yours it is written that you need one extra bottle of oil.Could You tell me what is correct amount of oil 2 or 3 quarts and a friction modifier.thanks 1 answer
        Does this actually fit a 13-14 Shelby or does it say 07-12 for a reason? 1 answer
        Will this fit my 2009 Shelby GT500 without having to install a panhard bar relocation bracket, like you do with Shelby's Performance differential cover? And what keeps the bearing load bolts from leaking? 1 answer

          Customer Reviews (100+) Write a Review

          Overall Rating 4.9

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Performance Gain 4.167883 4.2
          • Fit 4.958042 5.0



          • 5/5

            Installation Time: Afternoon

            August 13, 2019

            Sturdy

            This cover is very well made! Will also make it easier to change my fluid when needed. It was a pain to put on but worth it!

            Aclsallen

            Year: 2011 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            June 14, 2019

            Great look!

            Love the way it looks, too bad it is only visible on the lift...

            BrianB

            Year: 2011 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Afternoon

            June 13, 2019

            This is a must have upgrade!!!

            I wish I had done this upgrade sooner... and yes... it is an upgrade (top-front fill plug, bottom-front drain plug, beefy-girdle design w/ brace, larger housing). This was designed to reinforce the 8.8” housing, and could really save your rear-end... literally and figuratively. The kit from FRPP is incredible (new bolts, washers, and gasket are included). Once I got the car onto a lift and dropped one side of the panhard bar to access the bottom bolts, a simple socket set was used to remove the stock cover. I used 2 cans of brake cleaner to really clean out the housing, a razor blade to remove chunks of the old RTV, and a pneumatic grinding wheel (w/ scotch brite pad) to buff the surface for the new gasket. The new cover fits perfectly, and there are precise torque settings for all of the included bolts (12) and nuts (2). The instructions were clear and easy to understand, and I got the job completed in about 3 hours. You will need a breaker bar if you haven’t ever accessed your stock differential, as time, and factory-torqued bolts may be hard to break. Also, prepare ahead of your install, and get a 1/4” Power Torque bit for your 3/8” socket set in order to torque down the new FRPP bolts (not listed in the instructions). I went sans RTV and opted to use the included FRPP gasket as per the instructions (we shall see if that was a good choice or not in the future). If I had planned better, I think I would have purchased the LLR gasket also listed on this site; it’s silicone like RTV with reinforced ribbing, which seems stronger and significantly less messy. I would recommend this upgrade immediately to all 99-04 owners who are putting serious power down to their wheels... it’s not about looks... it’s about the reinforcement it gives to your differential housing.

            Jamie

            Year: 2000 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            June 11, 2019

            Ford racing rear axle gear cover

            This cover has a perfect fit. The view of car from the rear is now great. Also should improve the life of my rear end parts ......another great part from ford racing / American Muscle....THANKS

            Shovel27

            Year: 2014 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 09, 2019

            Ford racing 8.8 cover

            Great quality product makes filling the rearend much easier and also adds strength.

            Ash

            Year: 1993 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 05, 2019

            Better than stock

            I change to this cover from the stock one, reason, well the stock was leaking and is 'flimsy' for lack of better words. This cover is more stronger and also give a bit of rigiditi to the differential. Also a slightly more oil capacity for better cooling. There is no performance gain to this part, is more of a maintenance part.

            WebDevRacer

            Year: 2002 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            April 24, 2019

            Very nice product

            This product was shipped in a timely manner, and arrived as expected. Seems to be very nice and of high quality.

            Djcool95

            Year: 1995 Submodel: Cobra

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            April 09, 2019

            Rear end cover

            Definitely will give a better and aggressive look to your FOX BODY mustang

            Alonso

            Year: 1993 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            April 09, 2019

            Ford Performance Differential Cover

            easy to install, bought lubelocker gasket to go with it. Looks great and no leaks.

            JRW

            Year: 2011 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            April 02, 2019

            Well manufactured diff cover

            It’s great that this kit has everything short of diff fluid to install. It contains the cover, necessary bolts, washers, and high quality gasket. I was going to use RTV but the gasket looked good enough for my application and hasn’t leaked.

            WMS004

            Year: 2001 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Afternoon

            March 22, 2019

            The little things

            Diff cover added to support rear end bearings for those times when dropping the clutch is just going to happen

            Triplesmoke

            Year: 2009 Submodel: GT500

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            March 07, 2019

            Ford Performance Differential Brace/Cover.

            Installed this cover on my 2010 GT. Perfect fit with simple instructions and came with required hardware. Also cleared my Wats Link by 1/4".

            PatrickC

            Year: 2010 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            March 02, 2019

            Nice and clean looking

            fast shipping, packed nice, perfect fit made the rearend look 100 times better

            JohnP

            Year: 2003 Submodel: Mach 1

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            February 13, 2019

            Built and Nice

            Cover is heavy duty and looks like it, bit not to bulky...Casting and machining is done well...Plus you are flying the Ford flag with this cover

            DanielO

            Year: 2008 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            February 12, 2019

            Looks

            The item is a aswosome pice to add to your mustang it give it a muscle look that ever one looks at and always say where did you get it from and I tell them AM. Com

            KevinB

            Year: 2008 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            February 03, 2019

            Great performance and looks!!!

            I loved the looks of it right out of the box and it fit perfect!! I liked the oil fill port and the temp sensor port on it!! The structure support is really nice also!!

            JacobK

            Year: 2008 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            January 23, 2019

            looks great

            it looks great very well made easy fill up with gear oil and also easy to install i dont have high tools just a jack and jack stands and got it done in a couple of hours

            Michael

            Year: 2013 Submodel: GT

            Helpful (2)

          • 5/5

            January 22, 2019

            Great

            It looks good AmericanMuscle has the part and the delivery was quick

            Jeff

            Year: 1989 Submodel: LX

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            January 21, 2019

            Very Nice Piece perfect fit

            American Muscle had the best price around for this differential cover.

            50gt

            Year: 1993 Submodel: LX

            Helpful (3)

          • 5/5

            Installation Time: Afternoon

            January 21, 2019

            Rear Diff

            Well built and very nice looking. Also put a Lube Locker gasket on .

            JohnG

            Year: 2005 Submodel: GT

            Helpful (3)

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