Centered Poly Differential Bushing - (E30, E36 318ti, Z3)
BMW CENTERED POLY/DELRIN DIFFERENTIAL BUSHING- 33171135242 Overview E30 bushings tend to be overlooked and do not age gracefully. Your old E30 diff bushing has seen a lot of wear and tear and time has taken a toll on your differential bushings. The importance of bushings on your E30 is not to be understated; make sure that E30 diff is not moving all over the place under power. If your adding power to your E30 or running on an old, beat-up, and broken diff bushing (often letting you know it's broken with a thump between shifts) then this is for you! This is our E30 Differential Bushing that replaces OEM part-number: 33171135242. Many motor-swap builds will also add a secondary diff mount, which can be found here; What the E30 secondary diff mounts will do is add an additional ear to prevent any diff damage. When selecting which diff mounts you'll be putting on your E30, E36, 318ti, or Z3, the question you'll need to answer is what is the primary goal of this build? Is it track, autoX,