Rein CHK0005 Radiator Coolant Hose Kit - Lower

OE-Style Lower Radiator Hose Kit

Rein CHK0005 is an OE quality radiator coolant hose kit for select BMW applications. It is built as a direct replacement for the original lower hose assembly, with the temperature sensor pre-installed to reduce installation time and avoid reusing aged components.

Compatible with 1999-2003 BMW 528i, 2000-2003 BMW 530i, and 2001-2003 BMW 525i lower radiator hose applications, this Rein CHK0005 hose follows the original hose shape, branch layout, and quick-connect design.

Key Features

• Direct replacement for OE radiator hose assemblies
• Pre-installed temperature sensor helps reduce comebacks from reused sensors
• Thermoplastic quick-connect fittings match the original style
• No cutting, refitting, or adjusting required
• EPDM hose construction resists heat, salt, road debris, oil, and other contaminants
• Application-specific fitment for BMW lower coolant hose service

Detailed Description

Rein CHK0005 is engineered for European cooling systems that require an exact-fit lower radiator coolant hose. The hose is shaped to match OE routing and branch geometry, and the pre-installed temperature sensor supports a cleaner repair by eliminating the need to transfer the old sensor. For BMW 525i, 528i, and 530i models, this OE-style hose kit helps restore proper coolant flow and connection integrity at the lower radiator circuit.

This part cross-references BMW 11531705224 and CRP Auto Part 13621433077 for the same application.

Common Repair Uses

• Lower radiator hose leaks
• Cracked or brittle EPDM hose material
• Failed quick-connect fittings or worn O-rings
• Temperature sensor replacement during cooling system service
• Coolant seepage at the hose-to-hose or hose-to-fitting connection points

Installation Notes and Tips

Verify the vehicle’s lower hose routing and connector style before installation. Because the temperature sensor is pre-installed, there is no need to transfer the old sensor. Confirm all mating surfaces are clean and inspect adjacent cooling system components for wear before reassembly.

Quality Assurance

Rein designs this hose as an OE-quality replacement for European vehicles, with dimensions and connector details matched to the original assembly. Part number CHK0005 includes a 24-month or 24,000-mile warranty.