Womala Coolant Expansion Tank Cap OE 2105010715 for Mercedes Benz Engine Cooling System Parts

Core Functions

• Pressure Regulation: The primary function is to maintain the cooling system’s specified pressure, raising the coolant’s boiling point to improve heat dissipation efficiency and prevent overheating.
• Sealing Protection: Creates a tight seal on the expansion tank, preventing coolant leakage and avoiding contamination from external dust or debris.
• Overpressure Relief: Features a built-in pressure relief valve that opens automatically when system pressure exceeds the safe range, protecting the radiator, hoses, and other cooling components from damage.

 Compatible Vehicles

This Coolant Expansion Tank Cap is tailored for the following Mercedes Benz models and its respective OE number:

Notes: This Coolant Expansion Tank Cap is model-specific and designed exclusively for the listed Mercedes Benz models. Do not use it for other models or variants to avoid issues like improper pressure regulation, coolant leakage, or reduced cooling system efficiency. During installation, ensure the cap is tightened to the specified torque (per manufacturer guidelines) to guarantee a tight seal—over-tightening may damage the cap or expansion tank thread, while under-tightening can cause pressure loss. Periodically check the cap’s seal ring for cracks, hardening, or wear, and replace the cap immediately if faults are found to maintain the cooling system’s normal pressure and sealing performance.

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