Rein CHS0648 Engine Coolant Hose Flange Kit

Rein Coolant Flange Kit for Audi A4

Rein CHS0648 is an OE-quality coolant flange replacement kit for servicing the cooling system junction at the cylinder head. It brings together the main wear items needed for a proper repair on 2005-2009 Audi A4 and Audi A4 Quattro applications, helping address common coolant leaks and thermostat-related service work in one job.

Key Features

• Comprehensive kit for a single cooling system repair
• OE-type virgin resin coolant flange for added durability
• OE-type heater and/or radiator hose(s) with quick-connect hose end fittings
• OE-type thermostat assembly
• Includes temperature sensor, gaskets, and/or seals as listed in the product description

Detailed Product Overview

This Rein coolant flange replacement kit is built around the parts commonly serviced when the plastic coolant junction flange cracks, leaks, swells, or deforms from repeated thermal cycling. The CHS0648 kit is a direct-fitting solution for Audi A4 cooling system maintenance, combining the flange, thermostat, sensor, hoses, and sealing components needed to complete the repair with OE-style materials and fitment.

This part cross-references Genuine 06D121132C for the same application. Rein CHS0648 is also referenced in cooling system service searches for Audi A4 and Audi A4 Quattro models.

Common Issues This Kit Helps Address

• Coolant leaking from the cylinder head coolant flange
• Cracked or warped plastic coolant junction components
• Swollen or deteriorated coolant hoses
• Thermostat service during cooling system repair
• Temperature sensor and sealing component replacement during flange service

Installation Notes and Tips

Compatible With 2005-2009 Audi A4 and 2005-2009 Audi A4 Quattro. Replace the affected cooling system components as a set and perform a proper coolant flush during installation. Rein recommends OE or Pentosin Pentofrost series coolants for this repair. Verify all hose connections, seals, and sensor interfaces before refilling and bleeding the system.

Quality Assurance

Rein OE Quality components are made as direct-fitting replacement parts using OE-type materials for cooling system service. Part number CHS0648 is backed by a 24-month/24,000-mile warranty.