Rein CHR0668 Radiator Coolant Hose - Upper

OE-Style Upper Radiator Hose for Mercedes-Benz

Rein CHR0668 is an OE quality radiator coolant hose built for direct replacement on select Mercedes-Benz applications. It follows the original hose shape and branch layout, with thermoplastic quick-connect fittings that match the factory design for a cleaner service fit.

Compatible With 2008-2012 Mercedes-Benz C300 upper, 2008-2011 Mercedes-Benz C350 upper, 2010-2012 Mercedes-Benz GLK350 upper, and 2010-2011 Mercedes-Benz E350 upper applications with PZEV emissions, this hose is made for accurate fitment on the listed vehicles.

Key Features

• Direct replacement radiator coolant hose for OE-style service
• Rein CHR0668 matches the original hose routing, branch shape, and connector style
• EPDM hose construction for heat and contamination resistance
• Resists salt, road debris, oil, and other common underhood contaminants
• Reduces installation time by eliminating hose cutting, refitting, and adjustment
• Helps avoid leaks caused by reusing old quick connectors and O-rings

Detailed Description

Rein CHR0668 is engineered as a direct-fit upper radiator hose for Mercedes-Benz C300, C350, GLK350, and E350 models listed in the fitment data. The hose is designed to mirror the OE part in size, shape, and connection style, including thermoplastic quick-connect fittings where specified. Its EPDM construction supports reliable cooling-system service in demanding engine-bay conditions.

This part cross-references Genuine 2045012782 for the same application. Rein CHR0668 is a practical choice when replacing a worn, cracked, or leaking coolant hose on a Mercedes-Benz C300, C350, GLK350, or E350 with the listed upper-hose configuration.

Common Problems This Hose Can Address

• Coolant leaks at the upper radiator hose connection
• Cracked or hardened hose material from heat cycling
• Fitment issues caused by non-OE hose shape or connector design
• Repeated leaks from reused quick connectors or O-rings
• Cooling-system service delays from trimming or refitting an incorrect hose

Installation Notes and Tips

Verify the vehicle year, model, upper-hose position, and emissions note before installation. This hose is application-specific, so confirm the listed Mercedes-Benz fitment and inspect the mating connectors and sealing surfaces before assembly. Replacing worn O-rings and checking the cooling system for contamination or damage before reassembly helps support a proper repair.

Quality Assurance

Rein designs this hose as an OE-quality replacement for European vehicles, with factory-style dimensions and connector details to match the original application. Part number CHR0668 is backed by a 24-month or 24,000-mile warranty.