Powerflex Rear Upper & Lower Arm Outer Bushings – BMW E36 & E46 3 Series, Z4, X3

Powerflex Rear Upper & Lower Arm Outer Bushings for BMW E36 & E46 3 Series, Z4, X3.

Function and design

A suspension arm bushing forms a controlled mounting point between the arm and its supporting structure. Compliance at that joint allows movement under load; the condition and construction of the bushing influence how consistently the arm locates the wheel.

What to consider

For a suspension refresh, replacing deteriorated mounting bushings addresses movement at the joint rather than changing the spring or damper rate. Final steering and handling behavior also depends on the remaining joints, tires and alignment.

Application

BMW E36 & E46 3 Series, Z4, X3.

Choose your series

• Heritage: road-oriented polyurethane in a dark grey appearance intended to resemble original rubber.
• Black Series: the firmer series generally intended to prioritize movement control. Product-specific fitment and intended-use restrictions still apply.

Available options and part numbers

Installation considerations

Inspect the arm, housing and associated joints during installation. Use the fitting procedure for the selected part number and check alignment after work affecting suspension geometry.