URO 4H0121671D HVAC Heater Control Valve

HVAC Heater Control Valve Overview

This URO HVAC heater control valve is a direct-fit replacement for European vehicles that use a two-port coolant control design. It is built with PA6 housing material and D-shaped female connectors to match the original style connection points. Part number 4H0121671D is used across a wide range of Audi and Volkswagen applications.

Key Features

• Direct replacement heater control valve for HVAC coolant flow management
• PA6 construction for durable under-hood use
• Two hose connections with D-shaped connector design
• Female connector and male terminal configuration
• Port sizing matches the original application layout
• Part number 4H0121671D for accurate ordering

Detailed Description

URO replacement parts are engineered to meet or exceed OEM specifications for European vehicles, making this heater control valve a practical choice for restoring cabin heat control and coolant routing. The valve uses a 20 mm inlet outside diameter, 14 mm inlet inside diameter, 20 mm outlet outside diameter, and 14 mm outlet inside diameter, with two hose connectors and no gasket or mounting hardware included. This part number 4H0121671D cross-references Genuine 4H0121671D and Four Seasons 74906 for the same application. Compatible fitment includes Audi A3, A6, A6 Quattro, A7 Quattro, A8 Quattro, Q3, Q3 Quattro, Q5, Q7, RS7, S3, S6, S7, S8, and Volkswagen Golf, Golf Alltrack, Golf R, Golf SportWagen, and GTI applications.

What It Helps Address

• Inconsistent cabin temperature control
• Restricted or improper coolant flow through the heater circuit
• Faulty heater valve operation from worn internal components
• Replacement needs for a leaking or damaged HVAC coolant valve

Installation Notes and Tips

Verify connector shape, port diameter, and hose routing before installation. This valve uses a female connector with a male terminal and a D-shaped interface, so matching the original electrical and hose connections is important. Confirm vehicle application by part number 4H0121671D and compare the existing valve to the replacement before service.

Quality Assurance

URO Parts components are produced to OEM-level standards for European vehicle repair. A.P.A. also backs its URO Premium line with an unlimited mileage, lifetime warranty, though warranty coverage for this specific part should be confirmed by the product listing.