2006-2015 Mazda Miata Mx5 Differential. Removed from a 2011Mazda Mx5 Miata with a 4.1 gear ratio. Will fit all 2006-2015 Miatas with an automatic transmission, will not work with vehicles with a manual transmission. This made no odd noises or gear grinding sounds while testing in the vehicle. The fluid drained clear with no metal shavings or abnormalities. This assembly will ship drained of fluid. We did note a tear in the axle seal, so these should be replaced prior to installation. You will need to reuse some of your existing hardware and bracket for installation.