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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Features, Description, Reviews, Q&A, Specs & Installation
| Brand | Ford Racing |
| Spline Count | 34-Spline Inner; 32-Spline Outer |
| Axle Placment | Rear |
High-Performance Replacement. The Ford Performance Half-Shaft Axle Assembly; Left Side is designed to provide a robust transmission of power from the differential to the wheels, ensuring reliable and efficient drivetrain performance. It is an essential upgrade or replacement for enthusiasts looking to enhance durability and power delivery in their Mustang. The component supports severe duty usage and is ideal for demanding off-road and high-horsepower applications.
Construction and Appearance. Manufactured from aerospace-grade high-alloy materials, this half shaft features CNC billet machining for precision and strength. The design includes one-piece billet 34-spline inner and 32-spline outer stub ends. The shaft is finished with a blue powder coating that adds corrosion resistance while providing a professional, clean appearance.
Installation. Installation is straightforward, requiring no drilling or modifications, as it is a direct replacement for the production half shaft assembly. This ensures a smooth fitment process and minimal vehicle downtime.
Warranty. This component comes with a comprehensive warranty to ensure reliability and customer confidence.
Application. Fits 2015-2026 Mustang models including GT, EcoBoost, Dark Horse, and GT350, excluding the 2020 and newer GT500 models.
Ford Racing M-4139-MA
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
Tech Guides: