Aluminum Coolant Expansion Tank For BMW Mini 02-08 R52 R53 Cooper S
Upgrade your Mini’s cooling system with this heavy-duty aluminum expansion tank engineered for the R52 and R53 platforms. Your factory plastic reservoir often cracks near the mounting brackets as mileage climbs. This direct replacement eliminates that common failure point and maintains steady operating temperatures.
The solid alloy body absorbs heat cycles far better than the original plastic, keeping engine temps predictable during long drives. You get smoother coolant circulation, fewer topping-off trips, and a lighter front-end setup. The compact shape slots cleanly into the factory position, and the durable finish resists road grime and oil splashes.
Benefits & Tips
- Direct Drop-In Fit Slide the unit straight into the front mounting bracket without cutting hoses or bending lines.
- Clear Level Visuals Monitor fluid volume easily through the polished exterior and refill only when readings dip.
- Safe Installation Advice Position the included rubber washers on each fitting bolt and snug them gradually to prevent leaks.
Product Specifications
- Material & Finish Constructed from alloy aluminium available in silver or black coating.
- System Capacity Stores approximately 1.3 liters of radiator fluid for reliable overflow recovery.
- OEM Cross Reference Replaces 17137529273, 17107515499, 17117639024, 17132754264, and 17137509072.
- Lightweight Build Tips the scale at 0.72 kg for quick removal and faster reassembly.
- Vehicle Compatibility Suits 2002–2006 Mini Cooper S R52 hardtops and 2005–2008 Mini Cooper S Convertible R53 models.
Package Includes
- 1 x Coolant expansion reservoir tank with matching cap
- 2 x Rubber sealing washers
- 2 x Mounting screws
Always verify your exact model year and stamped part number before swapping units. Allow the entire cooling system to cool fully before disconnecting hoses, and never overtighten metal-to-plastic connections. Keep the area clear of loose belts and routing clips that could rub against the new shell during engine operation.
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