Engine Outlet-to-Thermostat Hose, Rein - F25 X3 35i, F26 X4 35i/M40i
Stock replacement hose - replace before it fails. Replaces BMW part #11537591889
This hose runs from the cylinder head to the thermostat for F25 X3 35i and F26 X4 35i/M40i.
NOTE: this hose is the exact same part as the original, including the plastic flange at the top. The plastic is a known source of leaks. If you're replacing this hose because of a leak consider only replacing the flange with an aluminum version (see Related Items below). Or replace both the hose and flange together.
Rubber hoses are ideal when new, as they allow some movement and flexibility during driving. The only problem is that they begin to degrade as they age, and can eventually fail, leaving you with the potential for loss of control from coolant spilling and/or an overheating situation. Replace your radiator hoses as a preventative measure before they fail in order to save you from further headaches and expenses. Having the proper hose is crucial to cooling system performance. A non-stock or generic hose may not have the same length or shape and could diminish cooling or fail to fix annoying leaks.
This is a manufactured by Rein (CRP) Automotive - the original supplier to BMW for this part, as well as many other hoses. As the 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.
F25 X3 (2011-2017) > X3 xDrive35i
F26 X4 (2015-2018) > X4 35i xDrive
F26 X4 (2015-2018) > X4 M40i xDrive