BMW E39 540i Radiator is a crucial cooling system component designed to regulate the engine temperature by dissipating heat. This used radiator is specified for the BMW E39 540i model, making it a focused replacement for managing engine heat in that particular vehicle. Proper radiator function is vital to avoid overheating, which can lead to costly engine damage.
This radiator works by circulating coolant through the engine and then passing it through the radiator’s cooling fins to release heat. When sourcing a replacement, buyers should compare the physical dimensions, inlet and outlet placements, and mounting points against their current radiator to ensure compatibility. As a used part, inspection for any visible damage or corrosion is recommended before installation.
Key points for consideration when evaluating this radiator:
- Designed specifically for BMW E39 540i vehicles
- Used condition, so verify integrity before fitting
- Part number and SKU: BB-426451 for reference in ordering or enquiries
If this part matches your old radiator’s design and connection fitting, it presents a viable option for replacement. For additional advice or queries about fitment, contacting the sales desk or submitting a part request may help in making an informed decision.
If this repair may need matching clips, brackets, lights, panels or more than one part, check more General, Quick Repair Bundle or Request a Part before ordering.

