Rein CHR0001 Radiator Coolant Hose - Upper

OE-Style Upper Radiator Hose for BMW

Rein CHR0001 is an OE quality upper radiator coolant hose built for European vehicle cooling systems. It is a direct replacement for the original hose assembly, with the correct shape, branch geometry, and thermoplastic quick connect fittings for a clean service fit on BMW 3 Series applications.

Designed for BMW 323Ci, 323i, 328Ci, 328i, 320i, 325i, 325xi, 330i, 330xi, 325Ci, and 330Ci upper hose applications, CHR0001 helps restore proper coolant routing without cutting or refitting the hose.

Key Features

• Direct OE-style replacement for the upper radiator hose assembly
• Application-specific design for BMW cooling system fitment
• Thermoplastic quick connect fittings match the original configuration
• EPDM hose construction resists heat, salt, road debris, oil, and other contaminants
• Reduces installation time by eliminating hose modification
• Black finish with a single-hose design

Detailed Description

Rein CHR0001 is engineered to match the original radiator hose layout used on select BMW models, including 1999-2006 BMW 323i, 323Ci, 328i, 328Ci, 2001-2006 BMW 325Ci and 330Ci, and 2001-2005 BMW 320i, 325i, 325xi, 330i, and 330xi upper hose applications. The hose follows the OE size and shape requirements and uses quick connect fittings to simplify replacement on vehicles equipped with that design.

This radiator coolant hose is made from EPDM and measures 15.35 inches centerline length, with 1.81-inch inside diameter ends. Rein CHR0001 is a practical choice when replacing a worn BMW upper radiator hose and restoring reliable coolant flow in the engine cooling system.

This part cross-references BMW OE numbers 11531436406 and 11534460438 for the same application.

What It Helps Address

• Coolant leaks at the upper radiator hose connection
• Cracked, hardened, or heat-aged hose material
• Fitment issues caused by modifying a universal hose
• Leak points from reusing old quick connectors or O-rings
• Cooling system service on BMW 3 Series upper hose applications

Installation Notes and Tips

Install CHR0001 as a direct replacement for the OE upper radiator hose on the listed BMW applications. No cutting, refitting, or adjusting the hose is required when the vehicle uses the matching quick connector setup. Inspect the mating surfaces, connectors, and sealing components before installation to help ensure a proper seal.

Quality Assurance

Rein Automotive positions this hose as an OE quality replacement for European vehicles, with construction and connector design matched to the original part. CHR0001 is backed by a 24-month or 24,000-mile warranty.