BMW Coolant Expansion Tank for 5/6 Series (2004–2010)

This BMW-branded Coolant Expansion Tank replaces the corresponding factory component on BMW 5/6 Series from 2004–2010. It stores expanding coolant and provides the system’s fill and recovery point. The supported range includes 525i, 525xi, 528i, 528xi, 530i, and 530xi, plus additional listed variants. As an Original BMW component, it is produced within BMW’s own vehicle-specific design and testing program.

Technical Details

• Manufacturer part number: 17-13-7-542-986
• Component: Coolant Expansion Tank
• Manufacturer: BMW
• Vehicle applications: BMW 5/6 Series
• Primary function: stores expanding coolant and provides the system’s fill and recovery point
• Production range: 2004–2010
• Listed models: 525i, 525xi, 528i, 528xi, 530i, and 530xi, plus additional listed variants

Fitment & Compatibility

Confirm the application in the table below, including production year, model designation, and submodel 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.