This kit replaces the forward differential mount bushings - known as the pinion mount bushings. The OEM units are soft rubber and break down fairly quickly with that wear accelerated the harder they are used. The worn bushings allow more movement of the rear differential under changing loads. This can initially be felt behind the wheel as slower and sloppier responsiveness, and as the OEM bushings near the end of their life or fair it can be accompanied by noise, vibration and secondary movements under changing loads - especially as you get on the gas and come back off of it. SuperPro's differential mount upgrades maintain OEM levels of noise, vibrations and harshness isolation in the cabin so your car maintains the new factory levels of comfort. At the same time performance is significantly improved with the differential more accurately located under a wider range of conditions and the service life dramatically improved with our materials maintaining peak performance throughout their life rather than slowly softening and degrading like natural rubber.

This Part Fits:

Year	Make	Model	Submodel
2000	BMW	323Ci	Base
1999-2000	BMW	323i	Base
2001-2006	BMW	325Ci	Base
2001-2005	BMW	325i	Base
2000	BMW	328Ci	Base
2001-2006	BMW	330Ci	Base
2001-2005	BMW	330i	Base
2003-2005	BMW	Z4	2.5i
2003-2005	BMW	Z4	3.0i
2006-2008	BMW	Z4	Coupe 3.0si
2006-2008	BMW	Z4	M Coupe
2006-2008	BMW	Z4	M Roadster
2006-2008	BMW	Z4	Roadster 3.0i
2006-2008	BMW	Z4	Roadster 3.0si
2012-2016	BMW	Z4	sDrive28i
2009-2011,2019-2021	BMW	Z4	sDrive30i
2009-2016	BMW	Z4	sDrive35i
2011-2016	BMW	Z4	sDrive35is