Ford Racing Boss 302 Torsen Differential - 31 Spline 8.8 in. (05-14 GT, BOSS, GT500)

Ford Racing Boss 302 Torsen Differential - 31 Spline 8.8 in. (05-14 GT, BOSS, GT500)
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OUR PRICE$929.99
Ford Racing Performance Parts
Item # 50528
Market Price $1,039.99You Save 11% ($110.00)
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Product Features

  • Standard on Boss 302 Laguna Seca
  • Full-time torque-sensing, torque biasing differential
  • 2.7 drive bias ratio
  • 8.8" Torsen Differential
  • Requires 31 spline axles
  • Perfect for street or track
  • Fits 2005-2014 GT, Bullitt, BOSS and Shelby GT500
Boss 302 Laguna Seca. Does your stock factory rear end just leave you spinning your wheels? Then upgrade to the same exact differential used in the Ford Racing "Boss 302 Laguna Seca" race car. This limited slip differential (lsd) uses a worm gear friction system that ensure your engine's power is transferred to the wheels for maximum traction.

Application. This Ford Racing Boss 302 8.8" Differential will fit 2005-2014 solid axle equipped V8 Mustangs including the GT, Bullitt, BOSS and Shelby GT500. Requires 31 spline axles. Does not fit IRS applications.

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.

  • 8.8" Limited Slip Differential
  • Will accept anti-lock exciter ring
  • Requires 31 spline axles
  • Requires 3 quarts Gear Oil
  • Requires 4 ounces of CM-19546-A1 friction modifier with initial fill
  • Fits solid axle only

Technical Note. You will need to reuse your factory 8.8 gear set, or upgrade to a new set of our 8.8" rear gears 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.

Installation Time:

(approx) 4 Hours

Difficulty Level:

Mechanical expertise or professional installation required.

What's in the box?

  • (1) Limited Slip Differential

What's in the box?

  • (1) Limited Slip Differential
  • GT 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
  • GT500 07, 08, 09, 10, 11, 12, 13, 14
  • Bullitt 08, 09
  • Boss 12, 13
Known Exceptions:
Only fits Mustangs equipped with a 8.8" rear end and 31 spline axles

About Ford Racing

Ford Racing Performance Parts
Ford Racing is THE source for performance parts for your Ford vehicle. For over 110 years, they've provided Ford enthusiasts with factory engineered parts and performance vehicles. No one knows how to make your Ford vehicle perform better than the engineers at Ford Racing. Their parts are designed to OEM standards and fit right out of the box.