Rein CHR0583 Radiator Coolant Hose - Lower - Primary Radiator To Thermostat

OE-Style Lower Radiator Hose for BMW Cooling Systems

Rein CHR0583 is an OE quality radiator coolant hose built for European vehicle cooling systems that require a direct-fit replacement. It matches the original hose shape and branch layout, including thermoplastic quick connect fittings where specified, to support a clean repair on BMW applications.

Compatible With select BMW 550i, 650i, and 750i models, this lower primary radiator to thermostat hose is made from EPDM and finished in black for a factory-style installation. Rein CHR0583 is engineered to reduce installation time while helping avoid leaks caused by reusing aged connectors and seals.

Key Features

• Direct replacement radiator coolant hose for BMW cooling system service
• Application-specific branched hose design with one branch
• EPDM hose material for heat and contamination resistance
• Resists heat, salt, road debris, oil, and other contaminants
• Reduces installation time with no cutting, refitting, or adjusting
• Helps prevent leaks and comebacks from reused quick connectors and O-rings
• Maximum working pressure: 87.02 psi
• Lower - primary radiator to thermostat position

Product Details

Rein CHR0583 is built as a complete OE quality direct-fit European hose for the lower radiator-to-thermostat circuit. The hose follows the original size and branch geometry, with a centerline length of 14 inches and molded end dimensions that support proper routing and connection fitment. This makes it a practical choice for BMW cooling system repairs where the original hose has softened, cracked, or begun to seep at the fittings.

This part cross-references BMW OE part number 17127575427 for the same application. Use CHR0583 when servicing BMW 550i GT xDrive, 550i, 550i xDrive, 550i GT, 750i, 750i xDrive, 750Li, 750Li xDrive, 650i, 650i Gran Coupe, 650i xDrive, and 650i xDrive Gran Coupe applications listed below.

What It Helps Fix

• Coolant leaks at the lower radiator hose connection
• Cracked, swollen, or heat-aged EPDM hose sections
• Improper fit from trimmed or modified replacement hoses
• Repeat repairs caused by reusing worn quick connectors or O-rings
• Cooling system service issues on BMW lower radiator to thermostat routing

Installation Notes

Install CHR0583 as a direct-fit replacement on the specified BMW cooling system position. No cutting, refitting, or adjusting of the hose is required when used on the listed applications. Inspect mating surfaces, quick connectors, and sealing rings before installation to help ensure a proper seal and reliable coolant flow.

• Fits 2010-2017 BMW 550i GT xDrive, lower - primary radiator to thermostat
• Fits 2011-2016 BMW 550i, lower - primary radiator to thermostat
• Fits 2011-2016 BMW 550i xDrive, lower - primary radiator to thermostat
• Fits 2010-2015 BMW 550i GT, lower - primary radiator to thermostat
• Fits 2009-2015 BMW 750i, lower - primary radiator to thermostat
• Fits 2010-2015 BMW 750i xDrive, lower - primary radiator to thermostat
• Fits 2009-2015 BMW 750Li, lower - primary radiator to thermostat
• Fits 2010-2015 BMW 750Li xDrive, lower - primary radiator to thermostat
• Fits 2012-2014 BMW 650i, lower - primary radiator to thermostat
• Fits 2013-2014 BMW 650i Gran Coupe, lower - primary radiator to thermostat
• Fits 2012-2014 BMW 650i xDrive, lower - primary radiator to thermostat
• Fits 2013-2014 BMW 650i xDrive Gran Coupe, lower - primary radiator to thermostat

Quality Assurance

Rein designs OE quality radiator hoses for European vehicles using factory-style dimensions and connection details. CHR0583 includes a 24-month or 24,000-mile warranty.