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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Ford Performance 3.73 Gears and Install Kit (86-09 V8 Mustang)
Ford Performance Ring and Pinion Gear Kit; 3.73 Gear Ratio (11-14 Mustang V6; 86-14 V8 Mustang, Excluding 13-14 GT500)
Ford Performance Ring and Pinion Installation Kit with High Torque Bearing; 8.8-Inch (11-14 Mustang V6; 86-14 V8 Mustang, Excluding 13-14 GT500)
Features, Description, Reviews, Q&A, Specs & Installation
| Brand | Ford Performance |
| Axle Spline Count | 31-Spline |
| Differential Ring Gear Size | 8.8 Inch |
High Performance Differential. The Ford Performance T-2 Torsen Differential; 31-Spline 8.8-Inch is engineered to provide superior traction by automatically distributing torque to the wheel with the most grip. This full-time torque-sensing, torque-biasing differential enhances handling and performance across various driving conditions, making it essential for enthusiasts seeking improved control and power delivery.
_x000D__x000D_Construction and Appearance. Built with durable materials designed to endure rigorous use, this differential features a robust Torsen T-2 gear set housed within an 8.8-inch casing. Its rugged and functional finish is optimized for performance applications, ensuring longevity and reliability under demanding conditions.
_x000D__x000D_Installation. Installation is straightforward for those with mechanical experience and requires no drilling. The differential is designed to fit directly into compatible 31 spline axle assemblies, simplifying the upgrade process.
_x000D__x000D_Warranty. This product comes with a manufacturer-backed warranty to guarantee quality and performance.
_x000D__x000D_Application. Fits 11-14 Mustang V6; 86-14 V8 Mustang, excluding 13-14 GT500. This differential is not compatible with 2013-2014 GT500 models due to different axle spline counts or differential housing specifications.
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.
Ford Performance M-4204-T31
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation Info
Installation Time
(approx) 4 Hours
Difficulty Level:
Mechanical expertise or professional installation required.
Installation Guides
No guide available for this part yet.
What's in the Box
Only fits Mustangs equipped with a 8.8" rear end and 31 spline axles