Rein CHU0465 Engine Coolant Hose - Cylinder Head To Thermostat

OE-Style Coolant Hose for BMW Cooling Systems

Rein CHU0465 is an OE quality engine coolant hose built for European vehicle cooling systems that require a direct replacement at the cylinder head to thermostat connection. It uses an application-specific design with a metal connector upgrade at a common failure point, helping restore proper coolant flow on BMW 525i, 525xi, 528i, 528i xDrive, 528xi, 530i, and 530xi models.

Built from EPDM with a black finish, this Rein coolant hose follows the original hose routing and connection style for a clean, direct service replacement. The CHU0465 part number is a practical choice when replacing a worn or leaking BMW coolant hose assembly.

Key Features

• Application-specific engine coolant hose for the cylinder head to thermostat circuit
• Metal connector upgrades a common coolant hose failure point
• Direct replacement design reduces installation time
• No cutting, refitting, or adjusting the hose during installation
• Helps prevent leaks caused by reusing old quick connectors and O-rings
• EPDM hose construction resists heat, salt, road debris, oil, and other contaminants
• OE-style fit and routing for European vehicle cooling systems

Detailed Description

Rein CHU0465 is engineered as an OE quality water hose for BMW cooling system service. It is designed for the cylinder head to thermostat position and matches the original hose layout, including the branch shape and connector style called for by the factory application. The metal connector provides a stronger replacement for a frequent wear point, while the direct-fit design supports a cleaner repair on BMW 525i, 525xi, 530i, 530xi, 528i, 528i xDrive, and 528xi models.

This part cross-references Genuine 11537544638 for the same application.

What It Helps Fix

• Coolant leaks at the hose connector or quick-connect interface
• Cracked, hardened, or heat-aged coolant hose material
• Cooling system service issues caused by worn O-rings
• Fitment problems from reused or damaged original connectors
• Loss of coolant flow between the cylinder head and thermostat

Installation Notes and Tips

• Verify the vehicle application before installation: Fits 2006-2007 BMW 525i, Cylinder Head To Thermostat, w/Metal Connector; Fits 2006-2007 BMW 525xi, Cylinder Head To Thermostat, w/Metal Connector; Fits 2006-2007 BMW 530i, Cylinder Head To Thermostat, w/Metal Connector; Fits 2006-2007 BMW 530xi, Cylinder Head To Thermostat, w/Metal Connector; Fits 2008 BMW 528xi, Cylinder Head To Thermostat, w/Metal Connector; Fits 2008-2010 BMW 528i, Cylinder Head To Thermostat, w/Metal Connector; Fits 2009-2010 BMW 528i xDrive, Cylinder Head To Thermostat, w/Metal Connector.
• Inspect mating surfaces, clamps, and adjacent cooling components before assembly.
• Replace damaged seals or connectors as needed to maintain a proper seal.
• Confirm hose routing matches the original layout before final tightening.

Quality Assurance

Rein Automotive positions this hose as an OE quality replacement for European vehicles, with construction and connector design aligned to the original manufacturer’s application. Warranty coverage is 24 months or 24,000 miles.