The mounting bracket is a plastic frame that sits with the E83 X3 radiator support and gives a mounting location for the E83 X3 expansion tank. The frame itself is not a source of leaks or failures but having a new complete mounting bracket makes changing the reservoir a breeze instead of a struggle. The tank and the bracket are both plastic and will easily crack. Pre-assembling the tank and bracket as a unit means you won't have to struggle with a stubborn tank or broken parts.
Only for cars with automatic transmission.
This is a expansion tank bracket manufactured by Rein (CRP) Automotive - an original supplier to BMW for many cooling components. As an OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.
BMW Fitments:
X3 Series
E83 X3 (04-10) > X3 2.5i M54 (2004-2005)
E83 X3 (04-10) > X3 3.0i M54 (2004-2006)
E83 X3 (04-10) > X3 3.0si N52 (2007-2010)