Gates CO35048 Radiator Coolant Hose Flange

Gates Coolant Outlet for Audi Cooling Repair

The Gates Coolant Outlet CO35048 is a radiator coolant hose flange built for direct replacement service on select Audi models. It is made from plastic and includes an integrated seal for a cleaner, OE-style repair at the coolant outlet connection.

Gates Coolant Outlets are engineered to address common material and design issues found in many aftermarket cooling parts. The Coolant Outlet product line covers water outlets through thermostat housing assemblies, giving technicians a focused replacement option for cooling system service on Audi A4, A5, A6, and Q5 applications.

Key Features

• Part number CO35048 radiator coolant hose flange
• Plastic construction for OE-style replacement fitment
• Integrated seal included
• Two-bolt-hole flange design
• Outlet dimensions: .35 in. and .87 in. outside diameter; .23 in. and .62 in. inside diameter
• Direct replacement for select Audi cooling system applications

Detailed Product Description

The Gates CO35048 coolant outlet is designed for cooling system repairs where the original radiator hose flange has cracked, warped, or begun leaking. Its molded plastic construction and integrated seal support a precise connection at the coolant outlet, helping restore proper hose attachment and coolant flow. This part cross-references Genuine 06H121132H and 06H121132E for the same application.

Compatible With select Audi vehicles including 2009-2013 Audi A4, 2009-2013 Audi A4 Quattro, 2010-2013 Audi A5, 2010-2013 Audi A5 Quattro, 2012-2013 Audi A6, 2013 Audi A6 Quattro, 2011-2016 Audi Q5, 2013-2015 Audi A4 allroad, and 2013-2015 Audi allroad. Search terms such as Audi A4 coolant outlet flange, Audi Q5 radiator hose flange, and Gates CO35048 coolant outlet replacement match this application range.

Common Repair Uses

• Replacing a cracked or brittle coolant hose flange
• Repairing coolant seepage at the outlet connection
• Restoring a secure hose-to-flange seal
• Addressing coolant loss from a damaged thermostat housing outlet area
• Replacing a worn OE-style plastic coolant outlet on Audi cooling systems

Installation Notes and Tips

Verify the original part number and hose connection style before installation. Inspect the mating surface, hose end, and surrounding cooling components for wear or contamination before installing the new outlet. Because this part includes an integrated seal, confirm the sealing surface is clean and properly aligned during assembly. After installation, refill and bleed the cooling system according to the vehicle service procedure and check for leaks at operating temperature.

Quality Assurance

Gates designs its coolant outlet program to provide a cost-effective replacement that follows original fit and performance expectations while supporting long service life. The CO35048 is built for select Audi cooling system applications and is backed by Gates manufacturing standards for replacement cooling components.