Water Bottles (Coolant Expansion Tanks)
For top-quality Mercedes spares and Mercedes Benz spare parts in Johannesburg, visit M&B Parts. We have got your Mercedes covered with a wide range of genuine parts to keep your vehicle running smoothly.
Mercedes-Benz Coolant Expansion Tanks and Water Bottles
M&B Parts supplies high quality Mercedes-Benz coolant expansion tanks and water bottles engineered to maintain correct cooling system pressure and temperature stability. These components are essential for preventing coolant loss, overheating, and long term engine damage.
We stock coolant expansion tanks for a wide range of Mercedes-Benz models, offering reliable fitment, durable materials, and parts that meet Mercedes cooling system requirements.
Cooling System Water Bottles for Mercedes-Benz Vehicles
Mercedes-Benz engines operate within precise temperature and pressure limits. The coolant expansion tank, commonly known as the water bottle, allows coolant to expand and contract as engine temperatures change while maintaining system pressure.
Using an incorrect or low quality expansion tank can lead to leaks, pressure failure, and overheating. Correct specification and build quality are critical for reliable engine operation.
What Is a Mercedes Coolant Expansion Tank
The coolant expansion tank stores excess coolant and regulates pressure within the cooling system. It works alongside the radiator, pressure cap, hoses, and thermostat to ensure consistent coolant circulation.
Over time, heat cycles and internal pressure can weaken the plastic housing, making expansion tanks a common failure point on many Mercedes-Benz models.
Common Signs of a Faulty Mercedes Water Bottle
A failing coolant expansion tank may show one or more of the following symptoms:
- Visible cracks or coolant residue on the tank
- Low coolant warnings or frequent top ups
- Coolant smell after driving
- Engine temperature fluctuations or overheating
- Coolant leaks near the engine bay
Replacing a damaged expansion tank early helps prevent overheating and costly engine repairs.
Genuine and OEM Mercedes Coolant Expansion Tanks
M&B Parts supplies a carefully selected range of:
- Genuine Mercedes-Benz coolant expansion tanks
- OEM-equivalent replacement tanks manufactured to original specifications
- Tested used expansion tanks where applicable
All coolant expansion tanks are selected for correct pressure rating, material durability, and compatibility with Mercedes-Benz cooling systems.
Mercedes Models and Cooling System Compatibility
Our coolant expansion tanks are available for many Mercedes-Benz models, including A-Class, B-Class, C-Class, E-Class, CLA, GLA, and selected SUV models.
We reference Mercedes chassis codes and part numbers to ensure accurate fitment. If you are unsure which expansion tank fits your vehicle, our team can confirm compatibility before purchase.
Why Buy Mercedes Coolant Expansion Tanks from M&B Parts
- Mercedes-Benz cooling system specialists
- High quality genuine and OEM replacement parts
- Competitive pricing without compromising reliability
- Nationwide delivery across South Africa
- Experienced support to help you choose the correct part
We focus on supplying cooling system components that meet Mercedes standards and real world operating conditions.
Need Help Choosing the Correct Coolant Expansion Tank
If you cannot find the correct coolant expansion tank or water bottle for your Mercedes-Benz, contact M&B Parts with your vehicle details or part number. Our team will assist in sourcing the correct component.
You may also explore related categories such as Mercedes engine parts or service parts to complete your cooling system repair.