BMW 320i E90 Expansion Tank | Coolant Reservoir Replacement

Coolant Expansion Tank (Radiator Overflow Bottle) – BMW 320i E90 / 328i

Reliable Cooling System Performance.

Keep your BMW running at optimal temperature with this high-quality coolant expansion tank, designed for BMW E90 models. This essential component helps regulate coolant levels and system pressure, preventing overheating and ensuring consistent engine performance.

✔ Key Features & Benefits

• Direct Replacement Fit
  Designed for BMW E90 models for precise fitment
• Efficient Coolant Management
  Maintains correct coolant levels and pressure
• Durable Construction
  Built to withstand high temperatures and pressure
• Cost-Effective Replacement
  Reliable aftermarket solution without compromising quality
• Improves Engine Reliability
  Helps prevent coolant loss and overheating

✔ Compatibility

• BMW 320i E90
  • Model Year: From 2007
  • Engine: N46B20
• BMW 328i (fitment dependent – verify before purchase)

(Please confirm compatibility with your specific vehicle.)

✔ Important Fitment Note

• Radiator cap is NOT included
• Reuse your existing cap or replace it for optimal performance

✔ Ideal For

• Replacing cracked or leaking expansion tanks
• Cooling system maintenance
• Preventing overheating and coolant loss

✔ Applications

• Engine cooling system
• Coolant expansion and overflow management

📦 What’s in the Box

• 1 × Coolant Expansion Tank

⚠️ Important Notice

Before purchasing, please ensure compatibility with your vehicle.

• Verify model, engine code (N46B20), and specifications
• Incorrect installation may cause cooling system issues
• Professional installation is strongly recommended

Returns & Exchanges:

• Items must be unused and in original packaging
• Proof of compatibility verification may be required
• Courier fees may apply for incorrect orders

💬 Need Assistance?

Contact our support team with your vehicle details—we’ll help you confirm fitment before ordering.