BMW B58 Upper Radiator Hose / Top Water Hose 17128633484 – F20 F21 F22 F23 F30 F32 F33 F36 – M140i M240i 340i 440i 430i (xDrive & RWD) – Genuine OEM Coolant Hose Pipe for F Series Remote/Aux Radiator Heat Exchanger

BMW F Series Top Water Hose | Part No. 17128633484 | Original Equipment

Restore dependable cooling performance with this factory BMW top water hose for F Series applications. This genuine component is the same specification as fitted at the factory, giving a precise fit and long service life on the listed models. Ideal when tackling coolant seepage, age‑related hose fatigue or a preventative cooling system refresh.

Part number: 17128633484

Why enthusiasts choose this OE hose

• Original BMW component for exact fit on the specified chassis and engines
• Designed to maintain correct coolant flow and temperature control
• Direct replacement with factory finish for a tidy, leak‑free install
• Proven reliability on road and track day builds we maintain in‑house
• Backed by BMW warranty for peace of mind

Real‑world results

We have installed this hose at MJ Modifications on our own development cars and for customer vehicles, and the feedback has been consistently excellent. Fitment is spot on, the quality is exactly what you expect from an original BMW part and it resolves common coolant line issues on these F Series platforms.

Vehicle compatibility

Suits the following models. If you are unsure, add your UK registration or the last 7 of your VIN at checkout and we will verify before dispatch.

1 Series

• F20 LCI 09/2015 to 06/2019 — M140i and M140i xDrive
• F21 LCI 09/2015 to 06/2019 — M140i and M140i xDrive

2 Series

• F22 10/2012 to 06/2016 — M240i and M240i xDrive
• F22 LCI 11/2016 to 11/2019 — M240i and M240i xDrive
• F23 03/2014 to 06/2016 — M240i and M240i xDrive
• F23 LCI 03/2017 to 11/2019 — M240i and M240i xDrive

3 Series

• F30 LCI 10/2014 to 10/2018 — 340i and 340i xDrive

4 Series

• F32 09/2015 to 02/2017 — 430i, 430i xDrive, 440i and 440i xDrive
• F32 LCI 07/2016 to 12/2019 — 430i, 430i xDrive, 440i and 440i xDrive
• F33 09/2015 to 02/2017 — 430i, 430i xDrive, 440i and 440i xDrive
• F33 LCI 08/2016 to 12/2019 — 430i and 430i xDrive
• F36 Gran Coupe 10/2015 to 02/2017 — 430i and 430i xDrive
• F36 Gran Coupe LCI 07/2016 to 12/2019 — 430i, 430i xDrive, 440i and 440i xDrive

Pre‑dispatch compatibility check

Enter your registration or last 7 VIN characters at checkout and we will confirm fitment for part number 17128633484 prior to shipping.

Installation

Professional fitting is recommended for all cooling system components. MJ Modifications offers installation at our Warwickshire workshop. For a fitting quote, email info@mjmodifications.co.uk.

Manufacturer and warranty

Genuine BMW part. Warranty coverage: two years for UK customers and one year for international customers when a VIN is supplied at checkout on compatible vehicles.

Search terms customers use

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