No matter which model or options you have, these four hoses are used on all N20 and N26 4-cylinder turbo models - F22 228i, F30 320i/328i, F32 428i. This is
"Step 1" in building your own cooling hose package.
Step 1 - Core Cooling Hose Set (this item)
Step 2 -
Base model Automatic Transmission Cooling Hose SetSport Line model Automatic Transmission Cooling Hose SetM Sport model Automatic Transmission Cooling Hose SetBase model Manual TransmissionSport Line Manual TransmissionM Sport Manual TransmissionIncluded in THIS N20 core cooling hose kit -11538645481, thermostat to water pump hose
11537603514, return hose from engine block to thermostat*
17127596831, expansion tank vent line
17127624676, expansion tank drain line
This is a
"starter kit" of N20 coolant hoses to get your started on a larger overhaul. These hoses are common across all N20/N26 models so we decided to make an "easy button" package that you can then build from.
There are other cooling hose kits to choose from with more hoses to replace. The 228i/328i/428i models came in Base, Sport, and M Sport packages and each has different cooling hose layouts that makes ordering confusing. Hopefully, our model-specific kits will eliminate all confusion.
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. The plastic clips and metal retaining clamps on hoses are only good for one-time use. Once removed they never seem to seal as well, leading to a leak soon after. We highly recommend that you replace your cooling system hoses as a preventative measure before they fail in order to save you from further headaches and expenses.
* 11537603514 hose - We recommend replacing the fitting on the return hose (#11537603514) with an aluminum version. The original plastic has been known to crack and leak so the aluminum is an upgrade. See Related Items below.
These hoses are manufactured by an original supplier to BMW for rubber and plastic parts. 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. These parts have a two year warranty.
BMW Fitments:2 SeriesF22 / F23 (2014+) > 228i
F22 / F23 (2014+) > 228i xDrive
3 SeriesF30 / F31 / F34 (2012-2019) > 320i
F30 / F31 / F34 (2012-2019) > 320i xDrive
F30 / F31 / F34 (2012-2019) > 328i
F30 / F31 / F34 (2012-2019) > 328i xDrive
4 SeriesF32 / F33 / F36 (14-20) > 428i
F32 / F33 / F36 (14-20) > 428i xDrive