Genuine BMW B48 B58 Coolant Expansion Tank - F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 - OEM Reservoir Header Tank - Part No 17138677649
Keep your BMW running cool and reliable with the Genuine BMW Coolant Expansion Tank for B48 and B58 engines. This OEM BMW reservoir, also known as a header tank, coolant bottle or radiator expansion tank, is a direct-fit replacement engineered for F Series 1 Series, 2 Series, 3 Series and 4 Series models. Expect perfect fitment, factory quality and long-term durability for daily driving and spirited use. Part number: 17138677649.
If you are experiencing a coolant smell, low coolant warnings or a discoloured, brittle or cracked coolant bottle, this OEM expansion tank is the smart preventative maintenance choice. We use this genuine tank in-house at Nforcd and our customers consistently report excellent fit, finish and leak-free performance.
Why choose this Genuine BMW expansion tank
- OEM BMW part for B48 and B58 engines - exact fit and factory reliability
- Direct replacement to address leaks, ageing plastic and low coolant warnings
- Built to withstand heat and pressure in demanding driving
- No guesswork - designed by BMW for correct hoses, cap interface and mounting points
- Ideal preventative maintenance on ageing F Series platforms
- Trusted by enthusiasts - used by Nforcd and highly rated by our customers
Compatibility
Fits BMW F Series models equipped with B48 and B58 engines
1 Series
- F20 LCI 09/2015 - 06/2019 - 120i, 125i, M140i, M140iX
- F21 LCI 09/2015 - 06/2019 - 120i, 125i, M140i, M140iX
2 Series
- F22 09/2015 - 06/2017 - 220i, 230i, 230iX, M240i, M240iX
- F22 LCI 09/2016 - 12/2019 - 220i, 230i, 230iX, M240i, M240iX
- F23 09/2015 - 06/2017 - 220i, 230i, 230iX, M240i, M240iX
- F23 LCI 09/2016 - 12/2019 - 220i, 230i, 230iX, M240i, M240iX
3 Series
- F30 LCI 09/2014 - 10/2018 - 320i, 320iX, 330i, 330iX, 340i, 340iX
- F31 LCI 09/2014 - 06/2019 - 320i, 320iX, 330i, 330iX, 340i, 340iX
- F34 GT LCI 09/2015 - 12/2019 - 320i, 320iX, 330i, 330iX, 340i, 340iX
4 Series
- F32 04/2015 - 02/2017 - 420i, 420iX, 430i, 430iX, 440i, 440iX
- F32 LCI 05/2016 - 12/2019 - 420i, 420iX, 430i, 430iX, 440i, 440iX
- F33 03/2015 - 02/2017 - 420i, 430i, 430iX, 440i, 440iX
- F33 LCI 05/2016 - 12/2019 - 420i, 430i, 430iX, 440i, 440iX
- F36 Gran Coupé 03/2015 - 03/2017 - 420i, 420iX, 430i, 430iX, 440i, 440iX
- F36 Gran Coupé LCI 05/2016 - 12/2019 - 420i, 420iX, 430i, 430iX, 440i, 440iX
Part number
BMW 17138677649 - Genuine BMW coolant expansion tank for B48 and B58 engines in F20, F21, F22, F23, F30, F31, F34, F32, F33, F36.
Symptoms that indicate replacement is due
- Coolant smell in the engine bay or after driving
- Low coolant warning messages
- Discoloured, cloudy, brittle or cracked coolant bottle
- Visible seepage around seams or hose connections
Compatibility check before dispatch
We verify fitment before shipping. Add your UK registration or the last 7 of your VIN at checkout and we will confirm this Genuine BMW coolant expansion tank 17138677649 suits your exact vehicle.
Fitting and support
Professional fitting available at Nforcd in Warwickshire. Request a quote via Sales@nforcd.com.
Manufactured by
BMW - Genuine BMW Parts.
Warranty
Two years manufacturer warranty for UK customers and one year manufacturer warranty for international customers when a VIN is provided at checkout on compatible vehicles.
Search friendly terms
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Also known as
BMW coolant expansion tank, BMW coolant reservoir, BMW expansion bottle, BMW header tank, BMW radiator expansion tank for B48 and B58 engines in F Series 1 Series, 2 Series, 3 Series and 4 Series - ideal for 120i, 125i, 220i, 230i, M240i, 320i, 330i, 340i, 420i, 430i, 440i applications.