Radiator Bottle/Expansion 180-220D/250D 2014+(Mercedes Benz C Class W205) serves as a critical component within the cooling system of specified Mercedes Benz C-Class models from 2014 onwards. This expansion bottle collects and stores excess coolant as the engine heats up, helping maintain optimal pressure and coolant levels, which is essential for preventing overheating and ensuring engine longevity.
This radiator expansion bottle matches vehicles with engine variants 180D, 220D, and 250D within the W205 series. When sourcing a replacement, it’s important to compare this bottle with your existing unit for compatibility in shape, connection types, and mounting points to maintain proper coolant flow and system pressure.
The radiator bottle functions by accommodating coolant expansion from the radiator and engine block, reducing the risk of leaks and pressure build-up in the cooling circuit. Its role supports efficient engine temperature regulation, a vital factor in vehicle performance and durability.
Key aspects to verify when considering this part:
- Vehicle model and engine code (180D, 220D, 250D) compatibility
- Year of manufacture beginning from 2014
- Matching mounting and hose connections to your current radiator system
If uncertain about fitment details, consult the sales desk for expert guidance or submit a specific request to ensure you acquire the correct replacement part for your C-Class W205 cooling system.
If this repair may need matching clips, brackets, lights, panels or more than one part, check more Radiators, Quick Repair Bundle or Request a Part before ordering.





