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Ford Performance Differential Cover - 8.8 in. (86-14 GT, Mach 1; 07-12 GT500; 93-98 Cobra; 11-14 V6)

Market Price $212.99 You Save 13% ($28.02)
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  • Item 50240
  • MPN# M-4033-G2

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Features, Video & Details

  • Low Profile Design with Bearing Cap Support
  • Prevents Side Load Bearing Deflection
  • Light-Weight 356T6 Cast Aluminum
  • Dissipates Heat - Increase Gear Life
  • Features "Ford Racing" Logo
  • Fits 1986-2014 8.8" Equipped Mustangs

Review & Installation Video

Review & Install Video

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

Cast Aluminum; Reduces Heat. Constructed from light-weight 356T6 cast aluminum the Ford Racing Mustang 8.8" Differential Cover dissipates heat much faster than the stock unit to prolong the life of your ring and pinion gears.

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

Application. This Ford Racing Differential Cover is designed to fit the 1986-2012 Mustangs equipped with the 8.8" rear end, including the 2011-2014 V6, 1986-2014 GT, Bullitt, Mach 1, and 2007-2012 Shelby GT500 and 1993-1998 SVT Cobra. It will not fit 1999-2004 Independent Rear Suspension (IRS) equipped SVT Cobras. Will not fit 2013-2014 GT500.

Fitment: 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
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93
  • Mach 1 - 03, 04
  • V6 - 11, 12, 13, 14
  • Bullitt - 01, 08, 09
  • Cobra - 94, 95, 96, 97, 98
  • GT - 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

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

People Who Bought This Item Also Bought

Most Helpful Reviews

Fun with the cover!

I bought this to replace the factory cover that had been hit by track debris. First let me say my car has a panhard bar and an large sway bar installed. I also do all my work on jack stands with out a ...

Read More
Helpful (1)

Great Looking

This cover looks awesome on my Mustang, if only you could get low enough to look under my car. It was extremely easy to install. The instructions were very precise and easy to follow. I would suggest replacing ...

Read More
Helpful (1)

Overall Rating 4.9 out of 5 stars
Read All 71 Reviews

Customer Photos (43) Submit Your Photo

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6 Questions / 9 Answers

Ask a Question

will this fit with 4.10 gears?


Helpful (1)
  • I have a 2005 Mustang with 4.10 gears and this fit perfectly.


Show 3 more answers

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?


Helpful (0)



Helpful (0)
  • Sorry about the issue you are having with your Ford Performance Differential Cover, for further assistance please email or call us!


With this diff cover, when filling the rear axle with new fluid do we just fill until it starts to drip out?


Helpful (0)
  • Capacity will be about the same. 2 quarts of gear oil and 4 oz of friction modifier. Level should be about 1/4" below the full plug. Use your pinky finger the reach in and check the level. Always level the car before checking.


I own a 2012 GT (BREMBO with the 3.73 Rear Pkg). Will this Differentisl Cover work?


Helpful (0)
  • Yes! This will fit a 2012 GT/V6 w the 8.8 rear end. You shouldn't have any issues with clearance for the factory panhandle bar.


Show 1 more answer

Will this clear Steeda panhard bar? Will this clear Steeda's adjustable street panhard bar? (Steeda part # 555-2551) Or, does anyone know the dimensions of this diff cover? Knowing that, I could go measure for clearance.


Helpful (0)
  • I don't have a Steeda panhard bar, but a Maximum Motorsports bar and a huge Eibach sway bar and it fit just fine. The sway bar is more of an issue than the panhard mount.


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Customer Reviews (71) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Performance Gain 4.135593 4.1
  • Fit 4.921875 4.9

  • 5/5

    Installation Time: Less than 1 Hour

    January 11, 2017

    Excellent Quality

    Great product, hopefully it will not oxidize. Easy to install and gives you a rear facing fill and drain plugs.


    Year: 2008 Submodel: Other

    Helpful (1)

  • 4/5

    December 12, 2016

    American muscle saves the day.

    Arrived on time and item was just as described. Looking forward to putting it on car looks great and feels like a very high quality part. Would have give a higher rating but must put on car in order to do so.


    Year: 2003 Submodel: Mach 1

    Helpful (1)

  • 5/5

    September 26, 2016

    Great Looking

    This cover looks awesome on my Mustang, if only you could get low enough to look under my car. It was extremely easy to install. The instructions were very precise and easy to follow. I would suggest replacing your axle seals when installing the cover, mine was seeping. I replaced my axle bearing/seals and cover in under 4 hrs.


    Year: 2005 Submodel: GT

    Helpful (1)

  • 3/5

    September 21, 2016

    Ford Racing Differential Cover

    Looks and feels substantially better built than the OEM cover that rotted away and started leaking after 75,000 miles. Can't really give much of a review as it has only been installed for one day other than to say that it looks good.


    Year: 2007 Submodel: GT

    Helpful (1)

  • 5/5

    August 13, 2016

    Great addition

    Straight forward install. The cover is well built, thick, and cleared my stock sway bare with ease. Even though its not visible the added insurance its there is enough for me. I thought long a hard about other variations of Diff covers, this one was the best choice for me. Great shipping times and Customer Service.


    Year: 1994 Submodel: GT

    Helpful (1)

  • 5/5

    August 08, 2016

    Nice way to dress up your rear

    After replacing my diff and gears I decided to update the cover as well. Nicer styling than factory and completes a show car looks as well.


    Year: 2014 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    August 02, 2015

    Fun with the cover!

    I bought this to replace the factory cover that had been hit by track debris. First let me say my car has a panhard bar and an large sway bar installed. I also do all my work on jack stands with out a lift. I was able to remove the old one without drama, but in order to install this cover I had to remove the panhard bar and sway bar. Then drop the axle down some in order to gain clearence to install the cover and it's bolts. If you where doing this on an unmodified Mustang I would say 2 hrs install time, but if you have all the stuff I have under mine plan on a half a day. Also refilling the diff was much easier through the cover opening rather than from the factory fill opening. One note of caution on here it says you need 3 quarts of oil, but you won't need a full 3 quarts. You'll over fill the diff. Check it using the factory fill hole. It looks great and I'll post a picture later to add to all the others here.


    Year: 2003 Submodel: GT Saginaw, MI

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    July 15, 2015

    Good deal

    Makes oil changes a snap. I track my car so this is important also looks good to bad I can only see it from under the car. It also allows you to ad more oil if you chose a gear lock diff.


    Year: 2003 Submodel: GT MA

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    July 25, 2013

    Looks Great!

    This cover is a nice finishing touch to the rest of my suspension mods and 4.10s. There's no noticeable performance gain, but I'm sure things will last longer back there. Fluid changes will also be easier as well.


    Year: 2009 Submodel: Bullitt Longview, TX

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    December 03, 2012

    Looks great

    Took the stock cover off and put this one one. Directions are very easy to follow. Love the fact that it has the drain and fill lines built in. The only negative is that the gasket that came with it was slightly torn but was on the very outside so it did not affect performance.


    Year: 1989 Submodel: GT VA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    February 04, 2012

    Cover those Gears!

    If you are changing out those gears, now is the time to bolt this great looking differential cover on. Easy installation, Very strong cast Aluminum and looks Excellent bolted on.


    Year: 2003 Submodel: GT Hawaii

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    January 27, 2012

    It fits , it's functional and looks great

    Have you upped the horse power,then this Ford Racing diff cover is highly recommended to help strengthen the 8.8 rear end carrier in your car. Also adds a little bling to the rear of your car. Easy install,comes with attaching bolts,diff gasket and install instructions.


    Year: 1993 Submodel: GT Helena,MT.

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    January 16, 2012

    Great looks

    Looks a lot better than the stock cover, plus it has a drain plug so the cover wont have to come off when the fluids changed again


    Year: 2002 Submodel: GT Whiteville, NC

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    December 07, 2011

    Overall an excellent product that adds strength and makes future diff oil changes a breeze.

    I was very impressed by this cover right out of the box. The fit and finish are excellent. A very well crafted and solid part. The hardware included were also top notch. I've heard that some of the other differential covers on the market come with very weak bolts that tend to break before the proper torque values are reached. I had no problem at all tightening the supplied bolts to the proper torque setting. One of the nicest things about the Ford Racing cover is that you don't have to relocate your panhard bar for installation like you do with many of the other covers on the market. This cover fits perfectly with absolutely no modifications to your suspension. You do have to remove the panhard bar temporarily during install to make room so you can tighten and torque the bearing preload bolts. The instructions were also pretty good. However I was surprised that the instructions didn't say to put any kind of sealant on the fill and drain bolt. Being over cautious, I put thread sealant on the fill, drain and preload bolts to prevent future leaks. The instructions also didn't include torque values for the fill and drain bolt. I contacted American Muscle about this and was told to just snug the bolts up pretty good being careful not to strip the threads. I did, and haven't had any problems so far. As far as actual performance, you probably will not notice any increase in performance with this part. You will in fact have piece of mind that your differential is a lot stronger with this cover and that your next fluid change will be as simple as loosening two bolts. Overall an excellent product. Perfect fit. Easy install. All at a great price from AM.


    Year: 2008 Submodel: GT Long Island, NY

    Helpful (4)

  • 5/5

    Installation Time: Afternoon

    November 30, 2011

    Rugged, and good looking too

    My stock differential cover was leaking, so I had the choice to either buy a new one or re-seal the current one. I chose to upgrade to this one, and even though I don't have a lot of mods or upgrades done yet, it's still nice to know I'll never need to replace this cover. Plus, it looks really great on the car. most people won't see it, but with Ford Racing on it, it looks like it belongs on the car anyway. It also came with instructions, and what amount to torque the bolts at so you don't over tighten.


    Year: 2003 Submodel: Mach 1 Barre, VT

    Helpful (4)

  • 5/5

    Installation Time: Less than 1 Hour

    May 21, 2013


    well as i build my stang up.. i just rebuilt my 8.8 with full 31 spline setup with 4.10's and installed this cover, it feels stout and way more supportive then the stock flimsy like aluminum piece.


    Year: 1996 Submodel: V6

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    October 11, 2011

    Great piece

    I had this installed at the same time as changing out the bearings in the rear diff so I cannot comment on the install but, the fit and finish are next to perfect. I have the BMR panhard bar which clears this cover without any issues. Mine came with polished stainless bolts and a rubberized gasket. The unit itself comes as a bare cast aluminum, so I opted to put on a couple coats of high temp clear coat engine enamel to keep it looking its best. Also I would recommend putting Teflon tape on the fill, drain and load bolts to prevent leaking from those areas. You don't necessarily notice a difference with the load bolts or the beefier construction for that matter but, but the peace of mind knowing that its is 100x stronger structurally is worth it in itself.


    Year: 2005 Submodel: GT Ottawa, ON

    Helpful (4)

  • 5/5

    Installation Time: Less than 1 Hour

    September 14, 2015


    very easy install, only issue was had to drop bmr panhard bar to install.


    Year: 2011 Submodel: GT auburn alabama

    Helpful (1)

  • 4/5

    July 31, 2011

    great product

    Install was a little odd. Bolts are hex for the cover, and the sway bar was in the way for the bottom bolt (I have the eibach anti-roll kit) but I feel much more confident about my rear now. Not to mention it looks grreat.


    Year: 1999 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    December 09, 2011

    Ford Racing Diff Cover

    Very pleased with the diff cover. Makes me smile every time I jack the rear of the car. Its a mod that you know is there but not everyone notices. Definitely makes changing the diff fluid easier and it gets all the fluid in the pan versus trying to pry off the stock cover and hoping everything makes it in the pan. To install you need to remove one end of the panhard bar. I made the mistake of removing the old diff cover and fluid, but realizing I didn't have the right tools to remove the panhard bar so I had to put the stock diff cover back on and fill it with new fluid. The new cover wont fit since the space between the rear axle and panhard bar is too close for the new cover and you wont be able to tighten the two bearing support nuts in the middle of the cover. Had the dealer install it while they were working on my car for no charge. Ditch the paper gasket for rtv gasket stuff if you dont want the cover to leak. Overall very pleased!


    Year: 2007 Submodel: GT

    Helpful (3)

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