BMW i3 & i3s (Non-REx) Coolant Expansion Tank
This coolant expansion tank holds the extra coolant on the BMW i3 as it expands and contracts with temperature. It is supplied without a cap.
A cracked or leaking tank usually leaves coolant traces around the tank, a falling coolant level or a low coolant warning. Old plastic tanks can also become brittle and split.
This is Febi part number 43503, made by the bilstein group.
Febi is a brand of the bilstein group, a German parts maker that supplies replacement parts for cars and vans across the world. Each part is made to match the original in fit and function, so it fits without modification. Getting the right part first time saves time in the workshop, so compare the numbers on your old part with the ones listed here before you order. Keep the old part until the new one is fitted and working, so you can compare them side by side if you need to. If you are replacing several parts at once, use the links below to browse our other BMW i3 parts. Parts like this help keep an older i3 safe, quiet and comfortable to drive.
The table below shows the BMW i3 versions listed in the bilstein group parts finder, with each note word for word. Listed in the parts finder for the BMW i3 (I01) 2013 – 2022: i3s 135 kW and i3 125 kW only. Compare the BMW part number on your existing part with the numbers on this page before ordering.
Key Benefits
- Direct replacement for the original
- Supplied without a cap
- Restores a sealed cooling system
- Durable plastic construction
- Febi quality from the bilstein group
Specifications
- Supplied: Without cap
- Part Number: Febi 43503
Replaces BMW part numbers 17 13 7 823 626 and 17 13 7 539 267.
Installation
Professional installation recommended. Let the system cool fully, drain enough coolant to remove the tank, then refill and bleed the system after fitting.
Explore More Parts
| Attribute | Value |
|---|---|
| Supplied | Without cap |
| Part Number | Febi 43503 |
Fits The Following BMW Models
| Model | Submodel |
|---|---|
| i3 (I01) 2013 – 2022 | i3s – 135 kW / 184 hp |
| i3 (I01) 2013 – 2022 | i3 – 125 kW / 170 hp |
BMW i3 & i3s (Non-REx) Coolant Expansion Tank FAQs
Which part numbers does it replace?
Replaces BMW part numbers 17 13 7 823 626 and 17 13 7 539 267. The Febi part number is 43503.
Is the cap included?
No. The tank is supplied without a cap, which is sold separately.
Do I need to bleed the system?
Yes. Refill and bleed the cooling system after fitting.
Will it fit my BMW i3?
Listed in the parts finder for the BMW i3 (I01) 2013 – 2022: i3s 135 kW and i3 125 kW only. Check the notes in the fitment table and compare the BMW part number on your existing part.
Is this a genuine BMW part?
No. It is a quality replacement part made by the bilstein group to match the original in fit and function.
Reviews
There are no reviews yet.