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Steeda Finned Differential Cover - 8.8 in. (86-14 GT; 03-04 Mach 1; 07-12 GT500; 93-98 Cobra; 11-14 V6)

Market Price $160.95 You Save 9% ($13.96)
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$146.99

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  • Item 16249
  • MPN# 555-8142

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    Features & Details

    • Engineered by Ford, Improved by Steeda
    • Finned Design
    • Dissipates Heat - Prolongs Gear Life
    • Increases Rear End Rigidity
    • Lightweight Cast Aluminum Construction
    • Fill, Drain and Cover Vent Plugs Included
    • Fits 1986-2014 8.8" Solid Axle Equipped Mustangs
    Engineered By Ford, Improved By Steeda. Engineered by Ford as original equipment for the Shelby GT500 and Boss 302 Mustangs, this innovative differential cover was designed with cooling fins to reduce overall gear oil temperatures and to increase rear end housing rigidity for improved gear set and bearing life. Steeda has then taken this unique cover one step further by installing fill and drain plugs for ease of maintenance.

    Finned Aluminum Reduces Heat. Constructed from light-weight cast aluminum, the Steeda Mustang 8.8" Differential Cover features a finned design that 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's recommended to upgrade to fresh Royal Purple Synthetic Gear Oil. You will need 3 quarts of Gear Oil.

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

    Technical Note: The O.E. application of this cover has the axle vent on the axle cover. All other 8.8 rear ends have the axle vent already installed on one of the axle tubes. Use the included vent plug to fill the vent hole on the cover and continue to use the existing vent on the axle tube.

    Note: Coupon codes cannot be applied to this product.

    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
    • (1) Axle Differential Cover
    • (1) Fill Plug
    • (1) Drain plug
    • (1) Cover vent plug
    • (10) Hex-head 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
    • 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, 13, 14
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Mach 1 - 03, 04
    • Other - 86
    • V6 - 11, 12, 13, 14

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

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    7 Questions / 7 Answers

    Ask a Question

    Will this cover fit when installed with a Eibach Swaybar kit?

    Quickdraw

    • The Steeda Finned Differential Cover will fit with almost all factory location sway bars, however, without knowing the exact year-model of your Mustang, it would be difficult to confirm this information. If you could please contact us at your earliest convenience, we would be more than happy to confirm the fitment for your application.

      AMJEFF

    Helpful (1)

    Do these require different bolts or can I use stock bolts? For a 92 fox ?

    RayA

    • The Steeda Finned Differential Cover will include new hardware. The stock hardware is unable to be used as it will be too short.

      Rob D

    Helpful (0)

    WIll this cover clear a Maximum Motorsports panhard bar on a foxbody?

    FiveoJoe

    • This differential cover will clear the Maximum Motorsports panhard bar.

      KevinD92

    Helpful (0)

    Will this cover fit a 2012 with a Torsen differential?

    6Bolt

    • The Ford Performance Boss 302 Torsen Differential - 31 Spline 8.8 in. (05-14 GT, BOSS, GT500) item #50528 (www.americanmuscle.com/ford-31spline-88-boss302-diff.html) fits on a Mustang that has an 8.8" Limited Slip Differential and will require 31 spline axles. The Steeda Finned Differential Cover - 8.8 in. (86-14 GT, Mach 1; 07-12 GT500; 93-98 Cobra; 11-14 V6) is built for any 1986-2014 Mustang's that come equipped with 8.8" solid axles and will also cover 31 spline axles.

      KevinD92

    Helpful (0)

    Clear the Steeda panhard bar? Ok, does it clear the Steeda aftermarket adjustable bar on the 05-09? (It is slightly thicker.)

    rtvistabluegt

    • I have the finned diff cover and a Shelby adjustable panhard bar on my 06 GT, and it clears.

      PSUX2

    Helpful (0)

    is a panhard bar relocation required with this cover on a 2010?

    oprude

    • "Relocation" is not needed but you will need to remove the panhard bar to allow installation of the new cover.

      Tnkman62

    Show 1 more answer Helpful (0)

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    Customer Reviews (43) Write a Review

    Overall Rating 4.7

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Performance Gain 3.975 4.0
    • Fit 4.809524 4.8



    • 5/5

      Installation Time: Less than 1 Hour

      January 10, 2018

      Time for the upgrades

      This was a great piece to add while redoing the gears on my GT. It gave the car a great clean look and a big upgrade from the stock cover that had warped a little.

      RayW

      Year: 1998 Submodel: GT

      Helpful (0)

    • 5/5

      November 24, 2017

      Captain America Mustang

      Love it...it makes acceleration more responsive very good work done at RT TUNING installing the item

      EMustang2014

      Year: 2014 Submodel: V6

      Helpful (0)

    • 5/5

      October 13, 2017

      Differential cover

      This cover was a perfect fit on my car. The only thing it doesn't come with is the gasket and obviously the gear oil. I got it for the drain plug and the filler plug but as an added bonus it looks fantastic even if no one is going to see it

      Kaleb

      Year: 1994 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      September 23, 2017

      Good stuff

      Great dif cover love that it has a fill plug and drain plug it also has the fins on cover to cool the dif assembly

      JamesB

      Year: 2006 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      August 27, 2017

      Works great

      Same thing on gt500. Keeps rear cooler and dose not leak like most

      JamesW

      Year: 2014 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      August 09, 2017

      Love it

      Fitment was perfect all hardware included if you running a BMR panhard bar remove it before doing anything with the diff cover will save you a lot of time avoids getting any silicon on the gears spend little over a hour doing this as was my fist time and panhard bar being in the way at first.

      1SICK50

      Year: 2014 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      July 29, 2017

      Very nice!!

      I bought this over the Ford cover because of the magnetic drain plug. I am honestly not sure on how to rate this product other than that. Looks good back there and clears my BMR Watts Link.

      WadeW

      Year: 2014 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      July 10, 2017

      Perfect!

      The cover was a perfect fit and there were no issues at all doing the upgrade! The performance gain here really is the heat dissipation faster to prolong the life of the rear axle housing and gears. I also changed the fluid to Royal Purple!

      JamesN

      Year: 2012 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      June 09, 2017

      Say no to dealership maintenance prices!

      Overall was happy with this. Fit fine and makes changing diff oil so much easier in the future. Did notice a couple metal burs on the inside that I picked off but otherwise I'm happy with the purchase. Lastly I used 4qrts to fill the pumpkin vs the 2.something it recommends, put 7K miles on it since then and no problem

      Chris

      Year: 2011 Submodel: V6

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      June 01, 2017

      Steeda finned differential cover

      I just installed this product on my 2009 Shelby GT500 and it looks and functions beyond my expectations . It looked so good that I dropped my rear axel and removed all surface rust , sandblasted , applied rust inhibitor , painted and cleared the entire unit . It is show stopping beautiful . The install was a snap that took all of a 1/2 hour ( on a lift ) . OUTSTANDING PRODUCT!!!!!

      600Hp

      Year: 2009 Submodel: GT500

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      June 01, 2017

      Great replacement

      Purchased to fix the leaky axle tube vent issue. Best part about replacing parts on Mustangs is that you can always replace something with a performance part. After 2 months the diff cover is completely clean and holding up great. The cover is a quality part and worth ever penny. Install took maybe 2 hours total. Draining the old cover and cleaning off the old gasket took a bit. The worst part was adding the new fluid, no room to work with under there.

      BradleyW

      Year: 2012 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      May 25, 2017

      hpg

      bought this cover because I could not open fill plug in housing. fit and finish good. no more dropping cover to drain. had to use lock washers on bolts to insure they would not bottom out in housing.

      hpgt

      Year: 2007 Submodel: GT

      Helpful (0)

    • 2/5

      Installation Time: Less than 1 Hour

      April 27, 2017

      Nice but hits the sway bar

      Very nice cover for the diff but the fins hit the rear sway bar. Had to shave it down and still hits so I have to shave it more. Should be an exact fit but it's not It's a stock sway bar not aftermarket

      PhilipC

      Year: 2003 Submodel: Mach 1

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      April 26, 2017

      Great value buy!!!

      The cover feels of great oem quality!!! Looks great!!! Keeps it cooler!! Easy install!!

      AndrewS

      Year: 2003 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      November 16, 2016

      Looks !

      Boy this Cover makes my Differential stand out and its easier to add oil. Thanks again American Muscle!!

      Yonald

      Year: 2007 Submodel: GT

      Helpful (4)

    • 5/5

      July 22, 2016

      Great product!

      Ordered this to install on my 98 cobra I think it's great the fill and drain plugs are magnetic considering the fact I broke my axle and draining and refilling a couple of times helped me get the rest of the little metal shavings out of there haha but great proud duct over stock and looks great too! Would recommend to anyone looking to replace the stock cover!

      Jctx

      Year: 1998 Submodel: Cobra

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      April 21, 2016

      Awesome cover

      I needed to replace the factory cover as I track the car and in longer sweepers the pressure build up was pushing fluid out the vent. So, with this cover having a vent on the top I was able to route from the axle tube to the top of the cover. Plus with fins and extra mounting points I know I'll be able to add-on a watts link without difficulty. The cover is very well made and fills very easily, but should be known that you need to remove the panhard bar from one end to install it. It would be nice if it came with washers too. Overall, so relieved that I installed this unit as it will add protection to the diff when I'm on a track like Watkins Glen or Summit Point.

      Cup

      Year: 2008 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      April 14, 2016

      07 gt 5 speed

      Don't see much of a difference except for looks but it's a great deal for the money and seems to work fine.

      KyleA

      Year: 2007 Submodel: GT

      Helpful (2)

    • 4/5

      Installation Time: Less than 1 Hour

      March 30, 2016

      great product

      This part is very great and helps oil life really well

      jay

      Year: 2001 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      August 14, 2015

      Great looking cover!

      I decided to get this Steeda cover since I was already swapping gears. Cheaper than the normal GT500 cover added fill and drain plugs = Good buy in my opinion. Cooling fins will hopefully help with keeping the diff temps in check, especially under race conditions. And it looks great too, which is obviously the most important reason...so much better quality than the stock cover.

      AEpack2006

      Year: 2012 Submodel: GT NOVA

      Helpful (2)

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