Rein CHR0524 Engine Coolant Hose - Expansion Tank (Upper)

OE-Style Upper Expansion Tank Hose

The Rein CHR0524 engine coolant hose is a direct-fit replacement for the upper expansion tank hose on select BMW X5 and BMW X6 applications. Built to match OE dimensions and connector style, it helps restore proper coolant routing without cutting, refitting, or adjusting the hose.

For BMW X5 and BMW X6 cooling system service, this Rein radiator hose is shaped for the original application and uses thermoplastic quick connect fittings for a cleaner repair. The CHR0524 is designed around OE fitment details to reduce installation time and help avoid repeat leaks from reused connectors.

Key Features

• Direct replacement for the upper expansion tank coolant hose
• Application-specific fit for BMW X5 and BMW X6 cooling system service
• OE-style size, branch shape, and quick connect fitting design
• EPDM hose construction with black finish
• Resistant to heat, salt, road debris, oil, and other contaminants
• Meets SAE J20R4D1 industry standard
• Protective shield included on the hose assembly

Detailed Description

Rein CHR0524 is an OE quality engine coolant hose engineered as a direct replacement for the original upper expansion tank hose used on select BMW X5 and BMW X6 models. The hose follows the OE layout, including the thermoplastic quick connect fitting, so the replacement matches the factory routing and connection points. This helps maintain proper coolant flow and supports a cleaner repair on European cooling systems.

Built from EPDM and finished in black, the hose is made for the demands of engine bay heat and exposure to common road contaminants. The 13-inch centerline length and application-specific dimensions support accurate fitment for the listed BMW X5 and BMW X6 vehicles. Part number CHR0524 is also referenced as Genuine 17127536235 for the same application.

What This Hose Helps Address

• Coolant leaks at the upper expansion tank hose connection
• Cracked or aged radiator hose material
• Fitment issues caused by non-OE hose shapes
• Repeat leaks from reusing old quick connectors or O-rings
• Cooling system service on BMW X5 and BMW X6 models

Installation Notes and Tips

Fits 2008-2019 BMW X6, Expansion Tank (Upper). Fits 2007-2018 BMW X5, Expansion Tank (Upper). Fits 2009 BMW X5, Expansion Tank (Upper), from 5/09. Verify the hose routing and connector style against the original part before installation. Replace worn sealing components as needed during cooling system service, and confirm all connections are fully seated before refilling the system.

Quality Assurance

Rein positions this hose as an OE quality replacement for European vehicles, with factory-style dimensions and fittings to match the original design. CHR0524 is built to SAE J20R4D1 standards and carries a 24-month/24,000-mile warranty.