This is a fully assembled differential for the s550 Mustang with the option of a 3.73 or 4.09 final gear ratio. The differential assembly includes an OEM limited slip differential (LSD). The standard option LSD is a clutch type LSD, which all EU Mustang models are fitted with from factory.
 
All assemblies are built in an iron housing for additional strength.
 
A mechanically locking TORSEN LSD is available as an upgrade, for even better traction during spirited driving.
 
An aluminum differential cover can be fitted optionally. We recommend our finned differential cover to effectively cool the differential oil, since the higher final gear ratios produce more heat than the OEM 3.55 EU-Mustang gear ratio.

All parts are brand-new OEM Ford and Ford Performance parts.