Four Seasons 74898 HVAC Heater Control Valve

Overview of Four Seasons Heater Valve 74898 for Audi A6 Models

The Four Seasons Heater Valve 74898 is an electric HVAC heater control valve designed specifically for Audi A6, A6 Quattro, and S6 models. This solenoid valve with an auxiliary coolant pump ensures precise temperature regulation within your vehicle's heating system.

• Electric heater valve with solenoid and aux coolant pump
• Three hose connectors and three female terminals for secure connections
• Thermoplastic and steel construction for durability
• Non-bypass style with three ports, each 0.625 inches in size
• OE replacement part ensuring compatibility and performance

Detailed Features and Specifications

The Four Seasons Heater Valve 74898 belongs to the Heater Valve product line, which focuses on reliable temperature control components for automotive HVAC systems. This part features three hose connectors and three female terminals, facilitating easy integration with your vehicle's existing wiring and coolant lines. Constructed from thermoplastic and steel, it balances corrosion resistance with structural strength. The valve operates electrically, providing precise control over coolant flow without a bypass function, which is essential for maintaining consistent cabin temperature in Audi A6, A6 Quattro, and S6 models. The fitting sizes on both ends measure 0.625 inches, matching OEM specifications for a direct replacement.

Common Applications and Problem Resolution

• Restores proper heater function in Audi A6 and S6 HVAC systems
• Eliminates inconsistent cabin heating caused by faulty heater valves
• Prevents coolant leaks associated with worn or damaged valves
• Resolves electrical control issues in heater valve operation
• Supports auxiliary coolant pump function for improved heating efficiency

Installation Notes and Tips

• Mounting hardware is not included; ensure you have necessary fasteners before installation
• Verify compatibility with Audi A6, A6 Quattro, and S6 models prior to purchase
• Handle electrical connectors carefully to avoid damage to female terminals
• Inspect hose connections for proper fit on 0.625-inch fittings
• Follow vehicle manufacturer guidelines for heater valve replacement procedures

Quality Assurance and Warranty Information

The Four Seasons Heater Valve 74898 is an OE replacement part manufactured to meet original equipment standards. Its thermoplastic and steel construction ensures durability and reliable operation within the HVAC system. While mounting hardware is not included, the valve is designed for straightforward installation in compatible Audi A6, A6 Quattro, and S6 vehicles. Warranty details should be confirmed with the point of purchase or manufacturer documentation.