Rein CHE0457 Engine Coolant Hose - Thermostat To Cylinder Head

OE Coolant Hose for BMW Cooling Repair

Rein CHE0457 is an OE-quality engine coolant hose for European vehicle cooling system service. It is built as a direct replacement for the original hose assembly, with the correct branch shape and thermoplastic quick connect fitting for a clean repair on BMW applications such as the 2006-2013 BMW 328i, 2008-2013 BMW 128i, and 2006-2008 BMW Z4.

Made from EPDM and finished in black, this hose is designed for the thermostat-to-cylinder-head location and uses a plastic connector to match the factory layout. Rein CHE0457 helps restore proper coolant routing without cutting, refitting, or adjusting the hose.

Key Features

• Direct OE-style replacement for the factory coolant hose assembly
• Application-specific fitment for thermostat-to-cylinder-head routing
• EPDM hose construction for heat and contamination resistance
• Thermoplastic quick connect fitting for factory-style connection points
• Helps reduce installation time on BMW cooling system repairs
• Designed to avoid leaks caused by reusing old quick connectors and O-rings

Detailed Description

Rein CHE0457 is engineered for BMW cooling system service where the original hose runs from the thermostat to the cylinder head. The hose follows OE dimensions and connection style, including the molded shape and quick-connect interface, so it installs like the factory part on models such as the BMW 323i, 328xi, 330i, 330xi, 325i, and 325xi. This makes it a practical choice for technicians and DIY repairs that require a precise coolant hose replacement.

This part cross-references Genuine 11537545890 for the same application. Rein CHE0457 is a direct-fit water hose replacement for European vehicles that need the correct hose geometry and connector style to maintain proper coolant flow.

What It Helps Fix

• Coolant leaks at the thermostat-to-cylinder-head hose connection
• Cracked, hardened, or heat-aged EPDM hose material
• Failed plastic quick connector or worn O-ring sealing surfaces
• Improper fit from universal hose repairs or trimmed replacements
• Cooling system service delays caused by mismatched hose shape or ends

Installation Notes and Tips

Verify the vehicle’s engine cooling hose routing and connector style before installation. This hose is application-specific and uses a plastic quick connect fitting, so the factory connection points should be inspected for wear, debris, and seal damage before assembly. Clean the mating surfaces and replace any damaged sealing components in the system to help ensure a proper seal.

Compatible With: 2008-2013 BMW 128i, thermostat to cylinder head; 2007-2013 BMW 328i, thermostat to cylinder head; 2009-2013 BMW 328i xDrive, thermostat to cylinder head; 2006-2011 BMW 323i, thermostat to cylinder head; 2007-2008 BMW 328xi, thermostat to cylinder head; 2006-2008 BMW Z4, thermostat to cylinder head; 2006 BMW 325i, thermostat to cylinder head; 2006 BMW 325xi, thermostat to cylinder head; 2006 BMW 330i, thermostat to cylinder head; 2006 BMW 330xi, thermostat to cylinder head.

Quality Assurance

Rein positions this hose as an OE-quality replacement for European vehicles, with factory-style dimensions, branch shape, and connector design to support accurate fitment and dependable service on BMW cooling repairs.