Rein CHU0774 Engine Coolant Pipe - Water Pump To Heater Hose

OE Coolant Pipe for Audi Cooling Repair

The Rein CHU0774 engine coolant pipe is an OE-quality replacement for European cooling systems, built for direct fitment on select Audi models. It is a black coolant pipe with a gasket or seal included, making it a practical choice for replacing a worn or leaking water pump to heater hose connection.

Compatible with Audi A4, A5, A6, A4 allroad, A4 Quattro, A5 Quattro, A6 Quattro, allroad, and Q5 applications that use the water pump to heater hose routing with a metal connector. Rein CHU0774 is also a direct cross-reference to OE part number 06H121065D for the same application.

Key Features

• OE-quality engine coolant pipe for European vehicle cooling systems
• Direct replacement for the original water pump to heater hose pipe
• Black finish
• Gasket or seal included
• Rein CHU0774 part number for easy identification

Fitment Details

• Fits 2010-2017 Audi A5 Quattro, water pump to heater hose, w/metal connector
• Fits 2011-2017 Audi Q5, water pump to heater hose, w/metal connector
• Fits 2009-2016 Audi A4, water pump to heater hose, w/metal connector
• Fits 2013-2016 Audi A4 allroad, water pump to heater hose, w/metal connector
• Fits 2009-2016 Audi A4 Quattro, water pump to heater hose, w/metal connector
• Fits 2010-2016 Audi A5, water pump to heater hose, w/metal connector
• Fits 2013-2016 Audi allroad, water pump to heater hose, w/metal connector
• Fits 2012-2015 Audi A6, water pump to heater hose, w/metal connector
• Fits 2013-2015 Audi A6 Quattro, water pump to heater hose, w/metal connector

What It Helps Repair

• Coolant leaks at the water pump to heater hose connection
• Cracked or brittle plastic coolant pipe sections
• Failed sealing surfaces at the pipe connection
• Cooling system service on Audi A4, A5, A6, and Q5 models
• Replacement of a damaged OE-style coolant pipe assembly

Installation Notes and Tips

Verify the vehicle’s cooling pipe routing and connector style before installation, especially the metal connector configuration. Inspect mating surfaces, hose ends, and adjacent cooling components for wear or contamination before reassembly. Proper coolant refill and bleeding procedures should be followed after installation to restore normal system operation.

Quality Assurance

Rein Automotive focuses on OE-quality replacement parts for European vehicles, with coolant pipes engineered to match the original design and fitment requirements. CHU0774 is built as a direct replacement for the factory coolant pipe used on the listed Audi applications.