BMW Coolant Reservoir Hose Connector – OEM Cooling System Replacement, Restores Cooling System Reliability for E46 320i, 323i, 325i, 328i & 330i Models | Replaces Part No. 17111707817

Restore proper coolant circulation and maintain cooling system integrity with this OEM-style Coolant Reservoir Hose Connector replacement for select BMW E46 models. Designed to connect key cooling system hoses and maintain a secure coolant pathway, this component plays an important role in preserving system pressure and ensuring reliable coolant flow throughout the engine cooling system.

Over time, factory hose connectors can become brittle from repeated heat cycles, pressure changes, and long-term coolant exposure. Once the connector begins to crack or weaken, coolant leaks, pressure loss, overheating concerns, and reduced cooling system efficiency can follow. Replacing a worn connector is a simple but important repair that helps restore proper cooling system operation and reduce the risk of engine damage caused by coolant loss.

Manufactured from durable automotive-grade materials, this replacement hose connector is built to withstand demanding engine bay temperatures and cooling system pressure. The precision-molded construction helps ensure OEM-style fitment and secure hose connections for dependable, leak-resistant performance.

Whether you are repairing a coolant leak, replacing a failed connector, or performing preventative cooling system maintenance, this direct-fit replacement helps restore factory cooling performance and long-term reliability without requiring modifications.

Key Features:

• Direct OEM Replacement: Designed to replace the factory coolant reservoir hose connector on compatible BMW E46 applications.
• Restores Proper Coolant Flow and System Pressure: Helps maintain a secure coolant path and dependable cooling system function.
• Helps Prevent Coolant Leaks and Overheating: Replacing a worn connector can help reduce the risk of coolant loss and temperature-related engine issues.
• Maintains Cooling System Reliability and Efficiency: Supports stable cooling system performance under normal and demanding conditions.
• Precision-Molded OEM-Style Fitment: Designed to match the original installation layout for secure hose connection and proper fit.
• Durable Heat-Resistant Construction: Built for long service life in demanding engine bay conditions.
• Ideal for Repairs and Preventative Maintenance: A smart replacement when refreshing aging E46 cooling system components.

FITMENT:

• BMW 3 Series – E46 Sedan, Coupe, Touring, Convertible

Compatible with:
320i Sedan (2001–2005)
323Ci Coupe / Convertible (2000)
323i Sedan / Touring (1999–2000)
325Ci Coupe / Convertible (2001–2006)
325i Sedan / Touring (2001–2005)
325xi Sedan / Touring (2001–2005)
328Ci Coupe (2000)
328i Sedan (1999–2000)
330Ci Coupe / Convertible (2001–2006)
330i Sedan (2001–2005)
330xi Sedan (2001–2005)

Engine compatibility:
M52TU inline-6
M54 inline-6

If you’re unsure whether this coolant reservoir hose connector fits your specific vehicle, please contact us with your VIN and we’ll be happy to verify compatibility before you order.

Replaces Part No. 17111707817

Please refer to the “Fitment” section in the product description for compatibility details.