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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)

44 Reviews
Our Price

$228.99

  • Item #24062
  • MPN# M-4204-F318C

  • Market Price $274.99
  • You Save 17% ($46.00)
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Product Videos 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.

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
Will it fit my Mustang?
  • 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

5/5
awesome product

excellent product and not too hard to install. the only real pain is trying to shim it into place, but other than that, only took a day or so to get installed. with 4.10 gearing and 31 spline axles, this ...

Read More
Helpful (1)

5/5
Love this diff.

Great difference in the feeling that's it is not going to break when I launch at the track.

Helpful (1)

Read All 44 Reviews
Overall Rating 4.8 out of 5 stars

Video

Customer Photos (5) View All Photos

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18 Questions / 9 Answers

Ask a Question

What else would i need to install this? Would i need a new 31 spline driveshaft aswell as the axles or just the driveshaft? I run a stock 8.8 28 Spline

CDsStang

  • You should only need 31 spline axles; it doesn't change anything with how the drive shaft engages the pinion gear. Apart from the axles, nothing else special.

    markstang690

    Good Answer (0) (0)

Show 2 more answers Question Resolved

3.73 gears does this have to be changed if i get new gears?

tburger

  • No, you do not need to change this if you re gear your car.

    BabyGT04

    Good Answer (0) (0)

Show 2 more answers Question Resolved

will this replace spider gears? will this replace my spider gears?

stackedstang

  • This is an entire unit consisting of a new carrier with spider gears, and clutch packs

    Skiddleme

    Good Answer (0) (0)

Show 2 more answers Question Resolved

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Customer Reviews (44) Write a Review

Overall Rating 4.8

out of 5 stars




  • 5/5

    August 03, 2016

    Peace of Mind.....

    I had this diff installed with Ford Racing 4.10's and love it. You can't beat it for the price and it handles the extra torque the 4.10's throw at it and then some. If I could put it in one word I would say "SOLID" My mechanic told me I picked a GREAT diff for my set up which made me feel REAL good. Thanks AM! You guys Rock!

    GruntMarine

    Year: 2006 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 4

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $1000+

    August 05, 2015

    Ford Racing Limited Slip with Ford Racing 3.73

    Replaced what I believe was a stock limited slip diff with this since the stock one was wearing out and squealing/moaning. Since I was getting this done, I went ahead and did the whole rear end, put in 3.73 gears and new rear axles to go from 28 spline to 37 spline for this. Was a bit of a pain because I have the ABS option on the car but got the right axles for that and the shop got it in. I must say, the rear end is completely quiet now and feels like I got more power. The mechanic that installed the parts said he was really pleased with how everything went together so smoothly and perfectly. Feels great and sounds perfect again.

    MustangGT98

    Year: 1998 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 California

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    May 17, 2015

    Traction Lock Carrier

    The carrier was well packaged and delivery was fast. Fit was perfect. Run out was less than 0.001". Very pleased. Replaced my existing carrier which had a bad run out 0.008".

    Frankenstein

    Year: 2007 Model: GT500 Driving Style: Street / Strip 'Stangs I have owned: 2 SEPA

    Helpful (1) (0)

  • 5/5

    Installation Time: Full Day

    November 06, 2014

    Great Product!

    I installed this unit along with Moser 31 spline axles. Rear end feels a bit more solid and I don't have to worry about beating it up on the street and track with 650HP+. Great price too!

    StanS

    Year: 2013 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 4 Philadelphia, PA, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    June 10, 2014

    Cheap for a carrier

    Pretty cheap for a carrier, new clutches, new spiders, S spring, and center pin. They even give you the bolt that locks the pin in. If you priced it seperatly its definatly worth it. Since its a cobra carrier it does not have notches where the clutch packs lock in. This is where my old carrier cracked and failed. Fits all 8.8 31 spline, including Bronco's/F-150's like mine.

    Garypmjr

    Year: 1995 Model: Other Driving Style: Street / Strip 'Stangs I have owned: 5 Piscataway Township, NJ, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    October 13, 2013

    Love this diff.

    Great difference in the feeling that's it is not going to break when I launch at the track.

    pibirdman72

    Year: 2007 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Houston, TX

    Helpful (1) (0)

  • 5/5

    Installation Time: Full Day

    January 28, 2012

    awesome product

    excellent product and not too hard to install. the only real pain is trying to shim it into place, but other than that, only took a day or so to get installed. with 4.10 gearing and 31 spline axles, this really helps with those hard launches at the track. thumbs up!

    2003greyMach

    Year: 2003 Model: Mach 1 Driving Style: Street / Strip 'Stangs I have owned: 1

    Helpful (1) (0)

  • 5/5

    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

    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

    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)

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