Bilstein B4 OE Replacement Strut Cartridge Fits select: 1988 BMW 528 E, 1987 BMW 535 I

B4 Series Front Driver or Passenger Side Twin-Tube Strut Insert (21-030512) by Bilstein. Quantity: 1 per Pack. Bilstein has a legendary reputation for providing original equipment components to many of the world’s finest vehicle manufacturers. The Bilstein B4 Series provides the same OEM quality and ride stability for the aftermarket. Bilstein uses both monotube and twin-tube technology to give the best in OE replacement driving comfort at a great economical price. Original-Equipment. The world’s foremost automotive brands put their confidence in Bilstein quality. Why? Because brand develops and series-produce suspension components in collaboration with Bilstein partners from the automotive industry. By placing your trust in Bilstein experience too, you’ll be opting for the Bilstein driving experience when you exchange your suspension components. Gas Pressure Technology. Over time, the mono-tube gas pressure technology developed by Bilstein has established itself as a standard in autom