OEM Expansion Tanks for Mercedes-Benz Worldwide

The expansion tank is a key part of the Mercedes-Benz cooling system. It stores and regulates excess coolant as engine temperature rises and pressure changes, helping maintain the correct coolant level and preventing overheating. On most Mercedes models, the tank is mounted in the engine bay alongside the radiator or near the inner fender, connected to the cooling circuit by hoses and a pressure cap.

Because it constantly works under heat cycles, pressure, and contact with hot coolant, the expansion tank is exposed to conditions that can eventually weaken the plastic housing or seals. Typical signs of a failing tank are easy to notice even without a mechanic: a visible coolant leak around the reservoir, dried coolant residue or white/pink staining on the tank, a warning for low coolant that keeps returning after topping up, a sweet coolant smell after driving, or hairline cracks in the plastic body, especially near seams or hose connections. In some cases, the tank may look discolored, swollen, or no longer hold pressure correctly.

Choosing a genuine used OEM Mercedes-Benz expansion tank is a practical alternative to aftermarket copies, which often differ in plastic quality, cap fit, or sensor compatibility. Original factory parts are built to the correct specification, fit properly, and cost far less than new dealer components. At imcar.com.ua, every part is matched by VIN or chassis number before shipping to ensure exact fitment, and carefully packaged for safe international delivery. Order with confidence and get the right OEM Mercedes expansion tank worldwide.