This upper expansion tank hose goes between the expansion tank and the radiator. The hose is comprised of both a rubber portion and a hard plastic portion. The plastic portion of the hose is the usual failure point, becoming brittle over time and heat cycles. We recommend a 90,000 mile replacement interval on this hose.
BMW Part Number: 11531436122 (11 53 1 436 122) 11-53-1-436-122
- 1999-2000 Z3 2.8 Coupe & Roadster
- 1999-2000 Z3 2.3 Roadster
- 2001-2002 Z3 3.0i Coupe & Roadster
- 2001-2002 Z3 2.5i Roadster
- 2001-2002 Z3 M Coupe & M Roadster