BMW 5 and 7 series vehicles rear differential mount bushings should be inspected for signs of cracking. Slight surface cracking of the rubber is normal. However, if the bushing is cracked all the way through, it must be replaced. This is often overlooked, so close inspection is required to determine the rubber condition. New bushings are available as P/N 33 31 6792 872.
About the Author
Mike Mavrigian
Motor Age Editor
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.