Rein CHU0457 Engine Coolant Hose - Thermostat To Cylinder Head

OE-Style BMW Coolant Hose Replacement

Rein CHU0457 is an OE quality engine coolant hose for European applications that require a direct-fit replacement at the thermostat-to-cylinder-head connection. Built for BMW cooling system service, it follows the original hose shape and branch layout for a clean, factory-style repair on 2006-2013 BMW 323i, 325i, 325xi, 328i, 328i xDrive, 328xi, 330i, 330xi, 128i, and Z4 applications.

This Rein coolant hose uses EPDM construction and a metal connector upgrade at a common failure point. The design helps reduce installation time and avoids the need to cut, refit, or adjust the hose during service.

Key Features

• Direct replacement coolant hose for BMW thermostat-to-cylinder-head routing
• Metal connector upgrades the most common failure point in the hose assembly
• OE-style shape and branch layout for accurate fitment
• EPDM hose material resists heat, salt, road debris, oil, and other contaminants
• Thermoplastic quick-connect style details follow OEM design requirements
• Helps reduce leaks caused by reusing old quick connectors and O-rings
• Rein CHU0457 is application-specific for listed BMW models

Detailed Description

Rein Automotive designs this coolant hose as an OE-quality replacement for European vehicles, with dimensions and connector style matched to the original assembly. The hose is built for the thermostat to cylinder head position and is listed for BMW 128i, 323i, 325i, 325xi, 328i, 328i xDrive, 328xi, 330i, 330xi, and Z4 applications. If you are replacing a worn BMW coolant hose and want a factory-style repair, CHU0457 provides the correct routing and connector configuration for the listed vehicles.

This part cross-references Genuine 11537545890 for the same application.

Common Problems This Hose Can Address

• Coolant leaks at the thermostat-to-cylinder-head hose connection
• Cracked or aged EPDM hose material
• Failure at the connector end of the coolant hose assembly
• Leak recurrence from reused quick connectors or O-rings
• Cooling system service delays caused by hose trimming or refitting

Installation Notes and Tips

Verify the thermostat-to-cylinder-head routing before installation and compare the connector style to the removed hose. Inspect the mating surfaces, quick connector, and O-rings for wear or contamination before assembly. CHU0457 is a direct replacement design, so no cutting, refitting, or adjusting of the hose should be required when installed on the listed BMW applications.

Quality Assurance

Rein positions this hose as an OE-quality replacement for European vehicles, with construction intended to match original fit and function. Warranty coverage is listed as 24 months or 24,000 miles.