This Ford Racing Limited Slip Differential is a great upgrade for those Mustang owners who are running a 31 spline axle. This differential will allow for better launch control with higher powered Mustangs. ****** Limited Slip Differential. Is your stock rear end leaving you in the lurch? Then you need to upgrade to a Ford Racing 8.8" 31 Spline Traction-LOK Limited Slip Differential with Carbon Discs from AmericanMuscle. A Limited Slip Differential (LSD) sometimes referred to as a "Posi" will allow both rear wheels to put the power down on the pavement giving you better traction and more impressive burnouts. Carbon Discs. This Ford Racing Limited Slip Differential uses the same carbon fiber clutch pack used in the Cobra and Shelby SVT Mustangs. Carbon-fiber friction plates are much more durable and are designed for higher torque over there stock counterparts. Application. This Limited Slip Differential is the same original equipment used in the 2003-2004 SVT Cobra Mustang. It will fit both solid axle and independent rear suspensions (IRS) equipped V8 Mustangs from 1986 to 2014 and 2011 to 2014 V6 Mustangs. Requires 31 spline axles. Application Note: 1986-2004 V8 Mustangs came factory equipped with 28 spline axles, except for 2003-2004 SVT Cobras which were 31 spline. All 2005 and newer V8 Mustangs come equipped with 31 spline axles. Technical Note. You will need to reuse your factory 8.8” gear set, or upgrade to a set of our 8.8" rear gears required for this Limited Slip Differential. No aftermarket gears are included. For normal driving conditions we recommend you use 75W 90 rear gear oil. This will give you the same oil weight as factory. For colder temps or race use try 75w 140. 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 Item #24062 MPN# M-4204-F318C ---------------------------------------------------------------- Make sure to Follow AmericanMuscle for the latest Ford Mustang news, videos, pictures and content! SUBSCRIBE at ****** Facebook: ****** Twitter: ****** Google : ****** Instagram: ****** AmericanMuscle.com is your aftermarket Mustang authority! We carry a huge selection of aftermarket Ford Mustang performance parts and styling accessories. With free shipping within the United States and best price-matching and customer service in the industry, we have you covered for your latemodel 1979-2015 Ford Mustangs. Make sure to talk to one of our Mustang Experts if you have any questions or want help planning your Mustang project or Mustang build! ******