Original BMW Expansion Tank – M2/M3/M4

The Original BMW Coolant Expansion Tank listed here fits BMW M2/M3/M4 from 2015–2021. It stores expanding coolant and provides the system’s fill and recovery point. Applications include M2, M3, and M4. This genuine BMW-branded component carries BMW’s U.S. two-year, unlimited-mileage limited parts warranty.

Technical Details

• Manufacturer: BMW
• Manufacturer part number: 17-13-2-284-600
• Component: Coolant Expansion Tank
• Vehicle applications: BMW M2/M3/M4
• Production range: 2015–2021
• Primary function: stores expanding coolant and provides the system’s fill and recovery point
• Listed models: M2, M3, and M4

Fitment & Compatibility

Match the vehicle to the fitment table below before installation, paying attention to submodels and notes. Match the engine, hose or connection layout, cooling-system equipment, and production date. A VIN check can resolve production splits or equipment differences. PMB Performance brings more than 20 years of European-parts experience to that review.