BEVINSEE Coolant Expansion Tank Kit with Cap – BMW E46 M52TU / M54

The original plastic expansion tank in BMW E46 models becomes brittle over time and is a known weak point in the cooling system. This BEVINSEE upgrade replaces the standard tank with a significantly more robust aluminum version, ensuring greater reliability – especially in high-performance or sportily driven vehicles. The kit comes with a cap and replaces several OEM part numbers. 

Advantages

• High-quality aluminum construction instead of brittle plastic
• Higher stability at temperature and pressure
• Corrosion-resistant surface (anodized)
• Improved durability and reduced risk of coolant leaks
• Plug & Play replacement for the original tank
• Ideal for daily, performance, and track day vehicles 

Suitable for

BMW E46 models with M52TU / M54 engine, including:

• BMW E46 323i / 323Ci
• BMW E46 325i / 325Ci / 325xi
• BMW E46 328i / 328Ci
• BMW E46 330i / 330Ci / 330xi

Not suitable for E46 M3.  

Replaces OEM numbers

• 17117573781
• 17117787039

Scope of delivery

• Coolant expansion tank
• Tank cap
• Depending on the version, coolant level sensor / accessories included (check offer) 

Note

Please check vehicle model, engine type, and OEM number before purchasing. Recommended for cooling system service or preventative replacement, as the original tanks often develop leaks with increasing age.