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Ford Racing Traction - LOK Limited Slip Differential w/ Carbon Discs - 31 Spline 8.8 in. (86-14 V8; 11-14 V6)

31 Reviews
Our Price

$228.99

  • Item #24062
  • MPN# M-4204-F318C

  • Market Price $274.99
  • You Save 17% ($46.00)
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Customer Photos
Features
  • Put the power to the pavement
  • Assembled 8.8" Limited Slip Differential
  • Includes Carbon Discs
  • Heavy Duty
  • Requires 31 spline axles
  • Fits 1986-2014 V8 and 2011-2014 V6
Description
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.

Mustang 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) Limited Slip Differential
Installation Info
Tech Specs
Specifications:
  • 8.8" Limited Slip Differential
  • Includes Carbon fiber clutch plates for increased durability
  • 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 or independent rear suspension
Fitment
  • Boss 302 - 12, 13
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93
  • Mach 1 - 03, 04
  • V6 - 11, 12, 13, 14
  • Bullitt - 01, 08, 09
  • Cobra - 94, 95, 96, 97, 98, 99, 01, 03, 04
  • GT - 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

Fits Mustangs equipped with a 8.8" rear end

Most Helpful Reviews View All

Overall Rating 4.8/5 Write a Review
5/5
Barry

The clutches in my old posi were worn so I decided to upgrade to 31 spline axles, which I also purchased with the FMS posi. As expected, no fitment issues. So far 16 passes on the 1/4 mile, hard launches

Read More
Helpful (7) (0)

5/5
The way to go

Mix these up with 31 spine axles and not only will it future proof your ride but i makes burn outs and sliding much more predictable at the limit and if you have 4.10s this is how you find your tracti

Read More
Helpful (13) (4)

Customer Photos (5) View All

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Q & A (14 Questions, 11 Answers) Ask a Question

What do i need to change on my 1998 V6 to make this work?

StangManWes Year: 1998 Model: V6

Question Resolved
Good Question (2) (0)
  • The 98 v6 will have stock a 7.5 inch rear end. You will need an 8.8 inch rear end housing, 31 spline axles for said 8.8 housing and 8.8 inch gears along with bearings, oil seals and such.

    Helpful (1) (0)

    Best Answer

    markstang690 Year: 2003 Model: V6

    Top 250 Contributor

Show 3 more answers

Will adding this to a 2012 V6 Mustang help at all in the 0-60 and 1/4 mile?

dwat89 Year: 2012 Model: V6

Question Resolved
Good Question (1) (0)
  • Pending on driving experience and track/road conditions...Maybe...but marginal gains as the only Mod and it shouldn't be the first Mod. It's price is the biggest selling point for this particular unit if 1/10th per 1/4 mile run means that much to you.

    Helpful (1) (2)

    Best Answer

    Shrapnel Year: 2012 Model: GT

    Top 10 Contributor

Show 2 more answers

Wihis work on a 2008 v6?

SuperStang Year: 2008 Model: V6

Question Resolved
Good Question (0) (1)
  • No, because that particular Differential only fits 8.8 rear axles and your 2008 Mustang V6 in factory configuration should have the 7.5 axle. Ford didn't start installing 8.8 axle in V6 until 2011. However the Auburn HP Series Limit slip Differential - 28 Spline would replace your original choice with similar performance benefits. http://www.americanmuscle.com/auburn-hp-28spline-75-lsd.html

    Helpful (0) (0)

    Shrapnel Year: 2012 Model: GT

    Top 10 Contributor

Show 3 more answers

Reviews (31) Write a Review

  • 5 Stars .81 81%
  • 4 Stars .16 16%
  • 3 Stars .03 3%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.8

out of 5 stars

30 Customers Recommend this Product

Installation Time:Full Day

Installation Cost:$250-$500

  • Performance Gain: 4.7 4.7/5
  • Fit: 4.95 5.0/5
  • Bang For Your Buck: 4.75 4.8/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    October 14, 2010

    Barry

    The clutches in my old posi were worn so I decided to upgrade to 31 spline axles, which I also purchased with the FMS posi. As expected, no fitment issues. So far 16 passes on the 1/4 mile, hard launches with drag radials and a fair bit of street use and all is well. Very satisfied with the product.

    Barry Stanley

    Driving Style: Street / Strip

    Helpful (7) (0)

  • 5/5 Yes, I recommend this product

    October 14, 2010

    great differential

    installed this differential into my 2001 mustang Bullitt. this is a great up grade from the stock differential. both wheels lock together when you throw the torque to it. would recomment this differential to anyone that wants to up grade from the stock unit. all in all I love the way this diffenential works.

    Don

    Year: 2001 Driving Style: Daily Driver

    Helpful (6) (0)

  • 5/5 Yes, I recommend this product

    August 31, 2009

    The way to go

    Mix these up with 31 spine axles and not only will it future proof your ride but i makes burn outs and sliding much more predictable at the limit and if you have 4.10s this is how you find your traction

    Blair

    Helpful (13) (4)

  • 5/5 Yes, I recommend this product

    December 11, 2010

    Great improvement!

    Bought this as part of a complete rear-end rebuild on a 1995 GT. My old posi was doing 1 wheel burn outs and this fixed that issue. You can feel it pull a lot harder now. This unit was very well built too- much higher quality than the stock one.

    Steel_Venom

    Year: 1995 Model: GT Driving Style: Daily Driver

    Helpful (5) (0)

  • 5/5 Yes, I recommend this product

    October 14, 2010

    Great Diff

    I paired this diff with Moser axles and its seen plenty of burn outs and hard launches on drag slicks. I cut 1.6 60ft times with a bolt on 04 Mach 1. Great diff for the price and great traction.

    Aaron

    Year: 2004 Driving Style: Street / Strip

    Helpful (5) (1)

  • 5/5 Yes, I recommend this product

    October 14, 2010

    Awesome

    This did exactly what it said it would. It's a great upgrade and no more complicated to install than any other diff. I was in the back changing out the gears so I decided to do the T-Lok as well. Thinking about getting steeper gears? Might as well do the T-Lok at the same time and save time, money, and knuckles!

    Dave B.

    Driving Style: Daily Driver

    Helpful (3) (0)

  • 5/5 Yes, I recommend this product

    May 14, 2014

    Great Price

    First time we used you guys. Great price,was here in one day. Great experience. Thanks Pine Grove Auto Sales and Service

    Brad8080

    Year: 2007 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Pine Grove, PA 17963, USA

    Helpful (2) (0)

  • 5/5 Yes, I recommend this product

    December 12, 2013

    Ford Racing 31 Spline Cobra Differential

    I drag race my street licensed 2002 mustang GT, and it's just a matter of time until you snap the factory 28 spline axles, and have to have your car towed home, if you use any kind of street/strip racing tire. I went with a 31 spline up grade racing/street axle, and because I've had very good luck with Ford racing products, I went with the 31 spline Cobra differential from American Muscle. I opted for a racing specialty axle and have had to engineer the ABS system , so that it still operates. So if you want to do this upgrade be sure to ask if the new axles accept the factory ABS rings, other wise, know going in, that if you upgrade with specialty axles, you may loose your ABS system. No big deal, but be advised.

    Top 1000 Contributor

    pilot

    Year: 2002 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 3 St. Louis, MO

    Helpful (2) (1)

  • 5/5 Yes, I recommend this product

    October 13, 2011

    Great Upgrade!!

    My stock diff was going bad so I took advantage of upgrading it to this with 31 spline axles and an aluminum driveshaft. I recommend a reputable shop to install it if you want it done right. Great upgrade and love that it comes with the carbon discs.

    Karen

    Year: 2003 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 10+ Wayne, PA

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    July 06, 2011

    31 spline diff

    worked and fit great, i would use this again if the time comes

    Derek

    Year: 2002 Model: GT Driving Style: Street / Strip

    Helpful (2) (1)

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