BMW Expansion Tank - Genuine BMW 17111723520

Maintain optimal cooling system performance in your BMW with this **Genuine BMW Expansion Tank**. This essential component, identified by **Part Number BMW-17111723520** (and **OE Number 17111723520**), serves as the reservoir for excess engine coolant, allowing for thermal expansion and contraction while maintaining critical system pressure.

Crafted to BMW's rigorous standards, this genuine part ensures a precise fit and reliable operation, preventing common issues like coolant leaks and overheating that can lead to costly engine damage.

This expansion tank is compatible with a broad range of BMW models from the early to late 1990s, specifically:
* **BMW 3-Series (E36):** 323i, 323is, 325i, 325is, 328i, 328is, and M3 models (1992-1999)
* **BMW 5-Series (E39):** 528i models (1997-1999, with specific production date notes)
* **BMW Z3:** Z3 Roadster, Z3 M Roadster, and Z3 M Coupe models (1997-2000)

Always verify fitment with your specific vehicle's year, make, model, and engine configuration to ensure perfect compatibility. Choose genuine BMW quality for peace of mind and lasting performance.