Expansion Tank Cap for BMW E90/F10 (2002-2021) - Part Numbers 17117639021, 17137516004.

This high-quality component is designed specifically for BMW models E90 and F10 produced between 2002 and 2021. It plays a crucial role in maintaining the optimal performance of your vehicle's cooling system. Made from durable materials, it ensures a secure and reliable seal for the expansion tank, preventing any coolant leaks and ensuring consistent pressure levels. With compatibility for part numbers 17117639021 and 17137516004, this cap is an essential replacement piece that offers longevity and efficiency, helping to keep your engine cool and functioning smoothly. Applicable Models: E60/E61/E63/E64/E70/E71/E72/E90/E92/E93/F01/F02 Suitable Models: 2 Series, 3 Series, 4 Series, 5 Series, 6 Series, 7 Series, 8 Series, X5, X6, X7 Material: Aluminum Part Number: 17117639021, 17137516004 Manufacture country: China Instructions included: No