2024-2025
2015-2023
2010-2014
2005-2009
1999-2004
1994-1998
1979-1993
Installation Time
(approx) 4 Hours
Difficulty Level:
Mechanical expertise or professional installation required.
Installation Guides
No guide available for this part yet.
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Eaton Detroit Locker; 31-Spline 8.8-Inch (11-14 Mustang V6; 86-14 V8 Mustang, Excluding 13-14 GT500)Find parts that fit my vehicle
Item 525582
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8 Reviews
Our Price
$1,199.99
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Put the Power to the Pavement
- Assembled 8.8" Detroit Locker Differential
- 100% Automatic Locking Traction
- Wheel Speed Sensitive Mechanism
- Heavy Duty Construction
- Requires 31 Spline Axles
- Fits 1986-2014 V8 and 2011-2014 V6 (Excludes 1999-2004 Cobra & 2013-2014 GT500)
| Brand | Eaton |
| Axle Spline Count | 31-Spline |
| Differential Ring Gear Size | 8.8 Inch |
Description
Detroit Locker Differential. Is your stock rear end leaving you stuck in the lurch? Then you need to upgrade to a Eaton 8.8in 31 Spline Detroit Locker Differential from AmericanMuscle. A Detroit Locker Differential sometimes referred to as a "Detroit No Spin" or "Detroit Soft Locker" provides 100% of the torque to both rear wheels so you can put all the power to the pavement giving you improved traction and more impressive burnouts.
Speed Sensitive. Eaton designed the Detroit Locker to keep both wheels in constant drive mode, but engineered in a wheel speed sensitive mechanism that has the ability to automatically allow wheel speed differentiation when required for turning and uneven road surfaces.
Heavy Duty. This Eaton Detroit Locker Differential features a solid cast iron casing construction with a spring loaded pack and race-bred carbon fiber clutch packs. This helps the Eaton Locker deliver the highest performance even under stressful driving conditions. This Detroit Locker is virtually bullet proof and is exactly what you would expect from a name with a heritage like Eaton.
Application. This Eaton 8.8in Detroit Locker Differential is designed to fit both solid axle suspensions equipped V8 Mustangs from 1986 to 2014 and 2011 to 2014 V6 Mustangs. Requires 31 spline axles. (Will not fit the 1999-2004 Cobra and 2013-2014 GT500).
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 Detroit Locker 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.
Speed Sensitive. Eaton designed the Detroit Locker to keep both wheels in constant drive mode, but engineered in a wheel speed sensitive mechanism that has the ability to automatically allow wheel speed differentiation when required for turning and uneven road surfaces.
Heavy Duty. This Eaton Detroit Locker Differential features a solid cast iron casing construction with a spring loaded pack and race-bred carbon fiber clutch packs. This helps the Eaton Locker deliver the highest performance even under stressful driving conditions. This Detroit Locker is virtually bullet proof and is exactly what you would expect from a name with a heritage like Eaton.
Application. This Eaton 8.8in Detroit Locker Differential is designed to fit both solid axle suspensions equipped V8 Mustangs from 1986 to 2014 and 2011 to 2014 V6 Mustangs. Requires 31 spline axles. (Will not fit the 1999-2004 Cobra and 2013-2014 GT500).
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 Detroit Locker 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.
Eaton 187C145A
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Detroit Locker Differential
4.8
Customer Reviews (8)
Reviews of Eaton Drivetrain products have an average rating of 4.9 out of 5
Questions & Answers
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Will It Fit My Mustang
- Boss 302 - 12
- Bullitt - 01, 08, 09
- Cobra - 93, 94, 95, 96, 97, 98, 99, 01, 03, 04
- Cobra R - 93, 95, 00
- GT - 87, 88, 89, 90, 91, 92, 93, 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
- LX - 87, 88, 89, 90, 91, 92, 93
- Mach 1 - 03, 04
- Other - 86
- V6 - 11, 12, 13, 14
Fits Mustangs equipped with a 8.8" rear end. Will not fit 1999-2004 Cobra and 2013-2014 GT500.
