05-10 Mustang LH Axle 31 Spline 31.68in 5x4.5

The 05-10 Mustang LH Axle 31 Spline 31.68in 5x4.5 by Ten Factory is a direct-fit replacement left-side axle shaft engineered for fifth-generation Mustangs running factory 5x4.5 bolt patterns. Built for enthusiasts upgrading to higher-horsepower engines, street performance builds, or simply replacing a worn or damaged factory axle, this shaft handles the increased torque and shock loads that come with modern modifications. The 31-spline design provides superior strength over stock 28-spline shafts while maintaining full compatibility with the original differential housing.

Ten Factory axles are manufactured to exact OEM specifications with precision-forged chromoly steel, ensuring consistent concentricity and durability under sustained load cycles. The 31.68-inch overall length maintains factory geometry for proper driveline angles and suspension clearance, while the 31-spline count distributes rotational forces across more engagement points than conventional shafts, reducing stress concentration and risk of spline wear. Heat-treated to factory specifications, this left-side axle delivers the reliability needed for both street and strip applications without requiring differential case modifications.

This axle is ideal for 2005–2010 Mustang owners with 5x4.5 bolt patterns who are pushing increased power through the factory rear differential. Whether you've added forced induction, tuned your engine management, or simply want to eliminate a marginal OEM component, the Ten Factory axle provides the structural margin for safe operation. Installation requires a lift and basic rear-end service skills; ensure proper bearing preload and torque specifications during assembly. Verify your specific Mustang model year and bolt pattern before ordering to guarantee fit.