Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $6,000 In Store Credit Enter Now

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

Item 12160
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $171.99 You Save 13% ($22.00)
Our Price


FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

      Product Information

      Features, Description, Specs & Installation


      • Heavy Duty Cast Aluminum
      • Dissipates Heat Faster
      • Prevents Side Load Bearing Deflection
      • Magnetic Drain Plug and Bolts Included
      • Fits 1986-2011 8.8" Equipped Mustangs


      Durable, quality construction. This 8.8 inch Girdle Support System (a.k.a. differential cover) for 1986-2011 Mustangs features heavy duty, yet lightweight, cast aluminum construction, magnetic drain plug, and the required bolts. It substantially increases your rear strength, durability, and lifespan, and is a direct fitment to OEM 8.8” differentials.

      Superb characteristics under load. This 8.8" differential cover for 1986-2013+ Mustangs gives the old adage, “An ounce of prevention is worth a pound of cure” a whole new meaning! This cover gives much better heat dissipation and supports less side-to-side bearing deflection than stock.

      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 Differential Cover is designed to fit the 1986 to 2013+ V8 Mustangs equipped with the 8.8" rear end and installs in approximately 30 minutes using basic hand tools. It does not fit 1999-2004 IRS Cobra or 2012 Laguna Seca edition BOSS Mustangs or 2013-2014 GT500.Please note that this differential cover will not fit gears higher than 4.10, it will only fit gears 4.10 and below.

      Technical Note. Gasket not included.Manufacture recommends the use of a stock style gasket or a bead of Form-a-Gasket for a proper seal.

      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

      MPN# 5R3Z-4033-B

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      Hardware included:
      • Fasteners
      • CNC Machined Billet Aluminum differential cover

      Tech Specs


      Customer Reviews (48)

        Questions & Answers

        10 More Questions

            Related Mustang Categories