ZHP Control Arm Bushing

The Lemforder Control Arm is a direct replacement for the front left lower suspension on select BMW E46 and Z4 models. This particular control arm is noted as a "ZHP/Sport Upgrade," having been used on high-performance variants like the 330i ZHP Performance Package and offered as a sport retrofit. It features all-metal ball joints, offering a significant advantage in longevity and robustness over standard plastic or rubber components, making it a preferred choice for both street and track use. Its performance is validated by its use in Grand Am and World Challenge E46 racecars. Control arms are critical suspension components that connect the suspension to the vehicle's subframe, controlling wheel and suspension movement. Wear in control arm bushings or joints can lead to a loose suspension feel, noises, uneven tire wear, alignment issues, and vibrations. Lemforder, an original equipment supplier to BMW, manufactures this control arm in Germany to OE quality standards, emphasizing precision, reliability, and corrosion protection for extended service life. This control arm is specifically designed for BMW E46 models including the 323i, 323ci, 325i, 325ci, 328i, 328ci, 330i, and 330ci (1999-2006), as well as Z4 models 2.5i, 3.0i, 3.0si, M Roadster, and M Coupe (2003-2008). Crucially, it is **only for cars with M Sports Package II (S338A)**. It is recommended to inspect control arms yearly for street cars and replace every 3-4 years, with more frequent inspection and replacement advised for track use. Replacing control arm bushings concurrently with the control arm is also recommended, as stock rubber bushings can wear out faster.