VEHICLE APPLICATION: Fits BMW 323Ci 2000, BMW 323i 1998-2000, BMW 323is 1998-1999, BMW 325Ci 2001-2006, BMW 325i 1992-2005, BMW 325is 1992-1995, BMW 328Ci 2000, BMW 328i 1996-2000, BMW 328is 1996-1999, BMW Z4 2003-2005 OE ENGINEERED: Designed to smoothly transmit torque at a constant speed, Cardone Constant Velocity CV Axle Drive Shafts utilize proprietary engineering processes to ensure they meet Original Equipment form, fit, and function. DURABLE QUALITY: Neoprene boots are designed with additional bellows, when needed, to resist bellow stress and cracking, which is the leading cause of boot failure. RELIABLE PERFORMANCE: High-quality grease withstands high-temperature and high-torque demands to ensure long-lasting, reliable performance. HASSLE-FREE INSTALLATION: A new axle retaining nut is supplied with every drive shaft assembly for a hassle-free installation, due to the likelihood that the original retaining nut is worn or stripped.