Powerflex USA - BMW E36 & E46 3 Series, Z4, X3 Rear Upper & Lower Arm Outer Bushing*PFR5 4618 is sold as a pack of 2. In order to do both upper and lower positions, you will need to purchase 2 sets. OE OEM Cross Reference Numbers: 33306852895 This parts fits the following models. BMW 3 Series E36 3 Series (1992 1999) E46 3 Series (1999 2006) E46 M3 inc. CSL (1999 2006) X Series E83 X3 (2003 2010) Z Series Z1 (1988 1991) Z4 E85 & E86 (2003 2008) E85 E86 Z4M (2006 2009) E89 Z4 (2009 2016)