Rein CHR0391 Radiator Coolant Hose - Lower or Lower - Main Radiator

OE-Style Lower Radiator Hose

Rein CHR0391 is an OE quality radiator coolant hose for European vehicles that need a direct-fit lower hose replacement. Built for Audi TT, Audi TTS Quattro, Volkswagen Golf R, and related applications, it follows the original hose shape and connection style for a cleaner repair.

Made from EPDM with black construction, this hose is engineered for heat and contamination resistance while helping reduce installation time on the correct application.

Key Features

• Direct replacement for the original lower radiator hose assembly
• Application-specific fitment for selected Audi and Volkswagen models
• EPDM hose construction for cooling-system durability
• Resists heat, salt, road debris, oil, and other contaminants
• Helps reduce installation time by matching OE dimensions and routing
• Designed to avoid cutting, refitting, or adjusting the hose during installation
• Part number CHR0391 for easy identification

Detailed Description

Rein CHR0391 is built as an OE-quality radiator coolant hose for lower radiator routing on select European vehicles. The hose matches the original size and shape requirements, including branch geometry and quick-connect style interfaces where applicable, so the replacement follows the factory layout instead of requiring modification. This makes it a practical choice for Audi TT, Audi TTS Quattro, Volkswagen Golf R, Volkswagen GTI, Volkswagen Jetta, Volkswagen Eos, and Audi A3 lower hose service.

For buyers searching for a lower radiator hose for 2006-2008 Volkswagen GTI, 2006-2008 Volkswagen Jetta lower main radiator hose, or 2009-2015 Audi TTS Quattro lower hose without auxiliary radiator, CHR0391 provides a direct-fit solution. This part cross-references Genuine 1K0122051GL and interchange 1K0122051CM for the same application.

What It Helps Fix

• Coolant leaks from a cracked, swollen, or aged lower radiator hose
• Fitment issues caused by non-OE hose shape or incorrect routing
• Repeated leaks from reusing worn quick connectors or O-rings
• Cooling-system service delays from hoses that require trimming or refitting
• Heat-related hose deterioration in the engine bay

Installation Notes and Tips

• Verify vehicle fitment by year, make, model, and position before installation.
• Confirm the lower hose routing and connector style match the original part.
• Inspect mating surfaces, clamps, and seals during cooling-system service.
• Flush and refill the cooling system according to factory procedures after replacement.
• Use the part number CHR0391 when matching the hose to the correct application.

Quality Assurance

Rein designs this hose as an OE-quality replacement for European applications, with construction focused on factory-style fit and dependable cooling-system service. CHR0391 is backed by a 24-month or 24,000-mile warranty.