1986-2014 Mustang Ford Performance 2012-2013 Boss 302 Torsen Differential - 31 Spline by Ford Performance

1986-2014 Mustang Ford Performance 2012-2013 Boss 302 Torsen Differential - 31 Spline

Now you can upgrade your Mustang 8.8 to the same differential used in the 2012-2013 Boss 302 Laguna Seca & 2013 GT500.

Item #M4204MB
MPN# M-4204-MB

Everyday Low Price: $1,049.99

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Made in the USA


  • Full-time torque-sensing, torque biasing differential
  • OEM on 2012-13 Boss 302 Laguna Seca
  • Accepts Anti-Lock Exciter Ring


  • 31 Spline
  • 2.7:1 Bias Ratio
  • Fits all Mustang 8.8" Housings

 What's in the Box

  • (1) Boss 302 Torsen Rear Differential

Boss 302 Torsen Differential
This Ford Performance (FRPP) M-4204-MB Torsen Differential is the exact same unit found in the 2012-2013 Mustang Boss 302 Laguna Seca Package & the 2013 GT500. The Torsen Differential is a full-time torque-sensing, torque biasing differential, meaning that torque and differentiation are continuously managed between the two axles and biased instantaneously according to variable road conditions. There are no clutches or preload to worry about, in fact, Torsen's patented parallel gearing system is designed to perform for the life of the vehicle. The Bias Ratio indicates that the Torsen Differential multiplies what torque is available from the wheel that is starting to spin-up or lose traction and sends that available torque, multiplied by the Bias Ratio (2.7:1 in this case), to the slower turning wheel with the better traction.

8.8" Fitment
This Boss 302 Torsen Differential will fit all 1986-2004 Mustang 8.8" axle housings so long as you plan on using 31 spline axles. It is a direct replacement for the factory Traction-Lok in 2005-2014 Mustang 8.8" housings.

Installation Note
This M-4204-MB Boss 302 Torsen Differential will NOT fit IRS applications.

- Fits 1986-2014 Ford Mustang 8.8" Rear End w/ 31 Spline Axles

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  • Ford Mustang - 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

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Ford Performance
Ford Performance - Mustang Ford Racing Parts
Ford Performance Parts is the leader in performance parts and accessories for Mustang and Ford Lightning. is proud to offer Ford Racing Performance Parts for your project. Ford Racing is dedicated to manufacturing the highest quality products offered in the industry. Choose from suspension, exhaust, wheels, and other performance parts at Late Model Restoration. If you want the best for your Mustang or SVT Lightning, look no further than Ford Performance Parts!
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