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

Market Price $209.99 You Save 12% ($25.00)
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  • Item 50240
  • MPN# M-4033-G2

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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

    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.

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    11 Questions / 9 Answers

    Ask a Question

    will this fit with 4.10 gears?


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


    Show 3 more answers 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.

      Rob D

    Helpful (0)

    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 (0)

    Does it work with 4.10 2008 mustang gt


    • This Ford Performance Differential Cover will work with a 4.10 ring and pinion ratio in a 8.8" differential.


    Helpful (0)

    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


    • For an 08 GT 8.8in differential, you will need 2 quarts of oil and a bottle of friction modifier.


    Helpful (0)

    Does this actually fit a 13-14 Shelby or does it say 07-12 for a reason?


    • This will not fit the 2013-2014 GT500 models as they have a different size differential cover than the previous years.


    Helpful (0)

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    Customer Reviews (100+) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Performance Gain 4.17347 4.2
    • Fit 4.941748 4.9

    • 5/5

      Installation Time: Afternoon

      March 15, 2018

      2007 gt500

      Fit perfectly. No problems with my BMR panhard bar. If your have an 8.8, this is the diff cover to get.


      Year: 2007 Submodel: GT500

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      March 14, 2018

      Support that looks great!

      Get rid of the tin can cap ford gave you. Get one of these beautiful rear diff covers that add support as well. Great addition to underneath your car.


      Year: 1993 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      February 28, 2018

      Why Not?

      Working on a Project SN95 Convertible (Oct 94, 95 Model year) and found a 8.8 rear axle to swap out the 7.5 stock. Got it home ($220.00) and opened the pumpkin. The Stock 3.27:1 and TracLoc was in great condition but the diff cover looked horribly like a peanut butter can lid so it was in need to go. I would like to have 3.73:1 but I am use to 2.73:1 so this is already and upgrade. I decided on this Girdle because in concert with the new axle, FMS Aluminum driveshaft, and SVE control arms I can now reach 400 rwhp without worries. After watching the short video (not the one on this site, very not useful) I followed what they suggested and it maybe took me 15 minutes at best. Looks great and now when the oil guy at my shop services my car, he can cry in his Chevy all the way home. Got to build the foundation guys and gals first. Too many people want to get under the hood and increase the HP over making sure the foundation can hold it all first. Do the math, plan it out, get the right parts, then blow them away. "Stock Sucks"


      Year: 1995 Submodel: V6

      Helpful (2)

    • 5/5

      Installation Time: Weekend

      February 26, 2018

      Well worth it, IMO

      This was my first differential fluid change, and I decided to go ahead and get this cover instead of replacing the stock cover. First of all, do yourself a favor and remove the panhard bar (runs diagonally closest to the differential cover). You will need to remove it for installation anyway, may as well remove it at the start so scraping the old gasket will be that much easier. I was undecided as to whether or not to use the supplied gasket, so I tried RTV first. Since I don't have experience with it, I just ended making a huge mess so I pulled it off, scraped it all again, and used the supplied gasket. All-in-all, I'm pretty happy with the purchase. I wish they didn't use hex bolts because I ended up having to buy a set of allen bits to use with my torque wrench, but I guess any excuse to buy new tools can't be all bad. I took the weekend to install it, which is ridiculous. But, as I said, it was my first time so I took my time and made some mistakes.


      Year: 2006 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      February 25, 2018

      Nice add on

      I just rebuilt my Diff and this is a necessary add on and keeps my Bullitt Stock Class. I live in a very hot place, so anything I can do to mitigate heat is advantageous. Nice add on to a Diff replacement.


      Year: 2008 Submodel: Bullitt

      Helpful (2)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      February 09, 2018

      Diff Cover

      Blows away stock cover for looks after 4:10 gear install. Can’t see it at all unless you’re flat on your stomach with one ear on the ground and using a flashlight.


      Year: 1998 Submodel: GT

      Helpful (2)

    • 4/5

      Installation Time: Less than 1 Hour

      February 05, 2018

      Diff Cover Install

      Very nice piece of rear. Might as well get one while doing any gear work. Always good also to go a little bigger cover vs stock when going with a larger to aid in additional fluid/lubricant. Only suggestion I have is to ensure you put rtv or some sort of sealant in main cap support bolts and jam bolts when installing; if you do not there’s a good chance due to pressure it will seep out a little fluid.


      Year: 2003 Submodel: Mach 1

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      February 01, 2018

      Install ford performance racing

      I like more ford racing gear cover than stock gear cover because it's easy to drain gear oil out on bottom of ford racing gear cover and make look different from before and after


      Year: 1994 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      January 14, 2018

      Ford diff cover

      Nice fit , good quality, nice appearance. Highly recommend this product.


      Year: 2012 Submodel: GT

      Helpful (2)

    • 5/5

      January 12, 2018

      Looks great

      Waiting on 4.10 gears to come in so I can see how it looks on the car.


      Year: 2005 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      January 11, 2018

      Fits Looks Great

      Replaced the stock cover with this while I was working on the undercarriage. Was a little concerned about the fit since I have the Steeda adjustable secondary rear sway, but the cover fits well and cleared the sway with no issues.


      Year: 2002 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      January 09, 2018

      Great looking

      First off, you MUST move your torsion bar in order to install new diff cover. The FP diff cover is quite a bit thicker than the stock. And you should get a hand pump to transfer fluid, just is much easier and cleaner. But once in place it really looks nice.


      Year: 2007 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      December 19, 2017

      Looks awesone!!

      I recently installed this cover after doing a gear oil change on my '11 GT/CS. Install was pretty easy, would have been easier if I had a lift! The fit and look are perfect. I also replaced my panhard bar at the same time and this new cover still clears the bar. Future gear oil changes will be easier with the fill and drain plugs on this FRPP cover! Shipping was super fast too!


      Year: 2011 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      December 10, 2017

      Diff cover

      To finish off the rebuild on the 8.8 so much better than the original cover, it's a shame that I can't see it because the car is lowered!


      Year: 2001 Submodel: V6

      Helpful (2)

    • 5/5

      November 27, 2017


      Fast shipping, installation was a breeze and I haven't had any issues with the cover. Can't speak on increasing the durability of the rear end to handle a hard launch, but filling and draining is a breeze!!


      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Weekend

      November 15, 2017


      Perfect fit, looks great, fast shipping will purchase here again


      Year: 2011 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      November 13, 2017

      Diff Cover

      Great fit, great looking, and love the drain and fill holes, And extra strength and support!!


      Year: 2003 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      November 08, 2017

      Ford Racing Diff Cover

      Great cover easy to install. Looks amazing******************************


      Year: 2012 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      September 26, 2017

      Looks great and perfect fit for crown vic

      Fit great and work perfect for rusted fill plug and dinnt take long to be put on come with gaskit and all hardware


      Year: 2001 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      September 22, 2017

      ford 8.8 diff cover

      i liked the fact it came with hardware. no drainer install and cleared the maximum motorsports pan hard bar.


      Year: 1996 Submodel: GT

      Helpful (2)

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