BMW F25 X3 & F26 X4 Coolant Overflow Hose – OEM Cooling System Replacement, Restores Cooling System Reliability for 20i & 28i xDrive Models | Replaces Part No. 17128651298

Restore proper coolant flow and long-term cooling system reliability with this OEM replacement Coolant Overflow Hose for the BMW F25 X3 and F26 X4. Designed to replace the factory overflow hose, this component helps maintain stable coolant circulation between the expansion system and cooling system, supporting proper pressure control and dependable engine operating temperatures.

As BMW cooling systems age, original hoses are exposed to constant heat cycles, pressure fluctuations, and long-term coolant contact. Over time, that wear can cause the hose material and connection points to weaken, harden, swell, or crack, eventually leading to coolant seepage, pressure loss, overheating concerns, and reduced cooling system efficiency. Replacing worn overflow hoses before they fail is an important preventative maintenance step that helps protect the engine and preserve long-term reliability.

This replacement hose is designed to restore the original routing and function of the factory unit, making it a dependable solution whether you are repairing a coolant leak, refreshing an aging cooling system, or replacing original hoses during preventative maintenance. It helps restore confidence in the cooling system while keeping your BMW operating the way it should.

Built for OEM-style fitment, this hose is designed to integrate cleanly with the factory cooling system on compatible F25 and F26 applications. It is an ideal replacement for owners looking to maintain proper coolant routing, dependable sealing, and long service life in a critical part of the engine bay.

Key Features:

Direct OEM Replacement: Designed to replace the factory coolant overflow hose on compatible BMW X3 and X4 applications.

Restores Proper Coolant Routing: Helps maintain stable coolant circulation and proper cooling system operation.

Supports Cooling System Reliability: A smart replacement when addressing coolant leaks, aging hoses, or preventative maintenance.

Helps Prevent Leaks and Pressure Loss: Replacing worn hoses can help reduce the risk of coolant seepage and cooling system issues.

OEM-Style Fitment: Built to match the original hose routing and installation layout on compatible BMW applications.

Durable Automotive-Grade Construction: Designed to withstand repeated heat cycles, coolant pressure, and long-term engine bay exposure.

FITMENT:

• BMW X3 – F25 SUV
• BMW X4 – F26 SUV Coupe

Compatible with select BMW applications including 20i and 28i xDrive models using this coolant overflow hose configuration. If you’re unsure whether this hose fits your specific vehicle, please contact us with your VIN and we’ll be happy to verify compatibility before you order.

REPLACES PART NO.: 17128651298

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