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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 $221.99 You Save 17% ($37.00)

$184.99

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  • Item 50240
  • MPN# M-4033-G2

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Features & 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
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

Most Helpful Reviews

5/5
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 ...

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Helpful (1)

5/5
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 ...

Read More
Helpful (4)

Overall Rating 4.9 out of 5 stars
Read All 60 Reviews

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5 Questions / 9 Answers

Ask a Question

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.

Arrow

  • 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.

    Stangbuster

    Good Answer (1) (0)

Answer This Question I need this answered (0) (0)

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

Cent

  • 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.

    MachRMan

    Good Answer (0) (0)

Answer This Question I need this answered (0) (0)

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

altstadtkid

  • Of course it will, it fits the 4.10 gear question right above it !! the 4.10 is a larger gear than the 3.73. I install these quite often

    MasterMechanic

    Good Answer (0) (0)

Show 1 more answer Answer This Question I need this answered (0) (0)

I RECENTLY HAD PURCHASED THIS PRODUCT AND INSTALLED IT MYSELF. MY QUESTION IS ON MY COVER ABOUT 2000MILES LATER ITS LEAKING FROM THE LOAD BOLTS, WONDERING WHAT SHOULD I DO?

RAUL

  • Sorry about the issue you are having with your Ford Performance Differential Cover, for further assistance please email or call us! http://www.americanmuscle.com/contact.html

    KevinD92

    Good Answer (0) (0)

Question Resolved

will this fit with 4.10 gears?

Blaise

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

    ChuckDO

    Good Answer (2) (0)

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Customer Reviews (60) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Performance Gain 4.104167 4.1
  • Fit 4.90566 4.9



  • 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.

    SR99

    Year: 1989 Submodel: GT VA

    Helpful (1) (0)

  • 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.

    kpd1031

    Year: 2008 Submodel: GT Long Island, NY

    Helpful (4) (0)

  • 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.

    FenixFallen1

    Year: 2003 Submodel: Mach 1 Barre, VT

    Helpful (4) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    May 21, 2013

    amazing

    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.

    bp1996

    Year: 1996 Submodel: V6

    Helpful (2) (0)

  • 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.

    pear0119

    Year: 2005 Submodel: GT Ottawa, ON

    Helpful (4) (2)

  • 5/5

    Installation Time: Less than 1 Hour

    September 14, 2015

    FORD RACING DIFFERENTIAL COVER

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

    champion05

    Year: 2011 Submodel: GT auburn alabama

    Helpful (1) (0)

  • 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!

    Mako07

    Year: 2007 Submodel: GT

    Helpful (3) (2)

  • 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.

    Matt

    Year: 1999 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    December 07, 2011

    Great look

    I had to purchase this rear differential because I upgraded to 4.10 gears. I am more confident know. This differential looks great I recommend it.

    09gt

    Year: 2009 Submodel: GT Rowland heights, California

    Helpful (1) (1)

  • 4/5

    Installation Time: Less than 1 Hour

    January 29, 2012

    Ford racing diff. cover

    Looks great easy to install. Just tork the heck out of the alan bolrs

    saintstang

    Year: 1997 Submodel: Cobra va

    Helpful (0) (1)

  • 3/5

    January 30, 2012

    ford racing diferentiel cover

    great product nice look under the car the differentiell cover fit perfectly

    jimv8power

    Year: 1987 Submodel: Other québec qc

    Helpful (0) (4)

  • 5/5

    Installation Time: Less than 1 Hour

    June 27, 2016

    Support your rear

    Ford quality. Screws have a foot to not damage your bearing caps. Comes with a real gasket and bolts. Have both a fill and drain plug, making service much cleaner and easier.

    Bob

    Year: 1996 Submodel: Cobra

    Helpful (0) (1)

  • 5/5

    Installation Time: Afternoon

    October 17, 2016

    Icing on the Cake!

    I wanted a good rear for drag racing, so I had an 8.8 overhauled with FRPP 4.10's, carbon clutches, Moser 31 spline axels, Moser differential cap studs, and added Lakeside "Traction Action" Lift Bars and poly bushing in the UCA's. The FRPP girdle/cover just seemed to fit like icing on the cake. It looks great and the car is a beast now. No worries for the ring and pinion breaking during hard launches now.

    trekinsane

    Year: 1983 Submodel: Other

    Helpful (0) (0)

  • 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.

    Misterford

    Year: 2005 Submodel: GT

    Helpful (0) (0)

  • 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.

    Sly

    Year: 2007 Submodel: GT

    Helpful (0) (0)

  • 5/5

    September 01, 2016

    Diff Cover

    Bolted in flawlessly with no leaks. Beautiful finish to dress up the underside a bit. Much beefier looking than the stock tin can cover.

    BCChromeYeller

    Year: 1999 Submodel: GT

    Helpful (0) (0)

  • 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.

    BLK94GT

    Year: 1994 Submodel: GT

    Helpful (0) (0)

  • 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.

    Kathy66

    Year: 2014 Submodel: GT

    Helpful (0) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    June 27, 2016

    Awesome cover

    Easy to install. Great cover. Highly recommend. Great with the fill and drain plug. Very handy. Easy instructions.

    MartyK

    Year: 2004 Submodel: Mach 1

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    June 19, 2016

    ASOLUTELY PERFECT!!!

    I bought this Ford Racing differential cover as a finishing piece to complete dressing up the underside of my fully restored/ customized '86 Mustang GT. Once I received it, I sent it out to to be powder coated white (except the Ford Racing polished plate) to match my car. It looks absolutely AWESOME. The fit and finish is perfect.....it clears all sway bars, exhaust and pan hard bars. I would definitely recommend this diff cover.

    CRAZYIVANOM2

    Year: 1986 Submodel: GT

    Helpful (0) (0)

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