Gates 23091 Radiator Coolant Hose - Lower

Gates 23091 Molded Coolant Hose Overview

The Gates 23091 molded coolant hose is a direct-fit radiator coolant hose for select Audi and Volkswagen applications. Built with EPDM, plastic, and steel materials, it follows OEM-style modular hose construction with integrated components for the correct lower-coolant routing.

Gates Molded Coolant Hose products are application-specific and use OE-style modular features such as quick-connect fittings and sensor ports where required. This makes the Gates 23091 a practical replacement for vehicles that need the original hose shape and connection layout retained.

Key Features

• Molded lower radiator coolant hose for specific Audi and Volkswagen fitments
• OE-style modular hose design with integrated female quick connector and sensor port
• Constructed from EPDM, plastic, and steel for cooling-system service
• Centerline length: 305 mm
• End inside diameters: 30 mm at End 1 and End 2; 1.09 in at End 3
• One quick-connect fitting for the specified application
• Cross-reference example: Continental 67204

Detailed Description

Gates 23091 is a molded radiator coolant hose engineered for lower hose routing on select Audi A4, Audi A4 Quattro, Audi A6, Audi A6 Quattro, Audi S4, and Volkswagen Passat models. It is built as a modular coolant hose assembly, meaning it includes OE-style integrated features rather than a basic universal hose shape. The molded profile, quick connector, and sensor port help maintain the original cooling-system layout on the vehicle.

This part number is used in applications that require a lower molded coolant hose with specific connection geometry. If you are replacing a worn or leaking hose on a 1998-2004 Audi A6 Quattro, 1999-2001 Audi A4, or 1998-2001 Volkswagen Passat, Gates 23091 provides the correct fitment profile for those listed vehicles.

What This Hose Helps Address

• Coolant leaks from cracked, aged, or softened hose material
• Improper hose routing caused by a damaged molded hose
• Failed or loose quick-connect interface at the cooling system connection
• Sensor-port related replacement needs on the original hose assembly
• Lower radiator hose replacement on listed Audi and Volkswagen models

Installation Notes and Tips

Verify the vehicle’s lower hose routing, connector style, and sensor-port layout before installation. Compare the original hose shape and end diameters to the Gates 23091 to confirm the correct application for your Audi A4, Audi A6, Audi S4, or Volkswagen Passat.

Inspect adjoining cooling-system components for wear, contamination, or damage before installing the new hose. Properly seat the quick connector and confirm all hose connections are secure after refill and bleed procedures are completed.

Quality Assurance

Gates manufactures this molded coolant hose as an OE-style modular replacement for specific applications, with integrated components that match the original hose design requirements. Part number 23091 is built for the listed fitments and cooling-system connection points.