BMW Expansion Tank Cap - Reutter 17111100848

Product Information

The engine coolant reservoir cap is a critical component of a vehicle's cooling system. It seals the coolant reservoir or expansion tank, which holds excess engine coolant and maintains pressure in the cooling system. The cap is designed to release pressure at a specified level, ensuring that the cooling system operates effectively without excessive pressure buildup.

• Coolant Leaks: A damaged or improperly sealed cap can lead to coolant leaking from the reservoir, which may be visible under the vehicle or around the reservoir itself
• Overheating Engine: If the cap fails to maintain the proper pressure, it can cause the engine to overheat due to a drop in the boiling point of the coolant, leading to inadequate cooling
• Low Coolant Levels: Frequent need to add coolant to the reservoir may indicate a faulty cap that isn’t sealing properly, allowing coolant to escape

About Reutter

Ruetter is a European based company with 6 locations in Europe that specializes in closure technology. They design and manufacture oil caps, fuel tank caps, radiator caps and most recently Adblue caps for the automotive industry via plastic injection moldings. With their very own in-house prototype shop and laboratory in their competence center near Stuttgart Germany, they have all of the necessary tools and equipment for analyzing their processes and quality. They use state of the art testing technology such as FEM (finite element mthod) for force and stress analysis, and mould filing or "Moldflow" simulations to ensure they produce top quality. No wonder why they're an OEM supplier!