2004-2005 Mazdaspeed Miata 4.10 Torsen LSD Limited Slip DifferentialDonor Car:2004 Mazdaspeed Miata – 151KFunctionality:Fully tested prior to removal. This made no odd noises or gear grinding sounds while testing. The fluid drained clear with no metal shavings or abnormalities.Physical Condition:Includes the factory Mazdaspeed differential assembly. This does NOT include the rear aluminum housing. Internal ring and pinion are in good physical condition with no damage. You will need to use a new housing and hardware for installation.Fits:2004, 2005 Mazdaspeed MiataFitment Notes:Will ONLY fit 2004-2005 Mazdaspeed models due to changes in the axle shaft design.