Four Seasons 74901 HVAC Heater Control Valve - Front

Overview of Four Seasons Heater Valve 74901

The Four Seasons Heater Valve 74901 is an electric HVAC heater control valve designed for precise temperature regulation in select BMW models. This single solenoid electronic heater valve ensures reliable operation within your vehicle's heating system.

• Brand: Four Seasons
• Brand Line: Heater Valve
• Part Number: 74901
• Type: Electric HVAC Heater Control Valve
• Material: Thermoplastic and steel construction
• Hose Connector Quantity: 2 connectors (0.75 inch fitting size each)
• Terminal Quantity: 2 female terminals
• Non-bypass style with 2 ports
• OE Replacement part

Four Seasons Heater Valve Product Line Details

The Heater Valve product line by Four Seasons focuses on electronic heater valves engineered to regulate coolant flow within the HVAC system. This line includes non-bypass valves like the 74901, which use a single solenoid to control heating efficiently. Designed to meet original equipment specifications, these valves provide dependable temperature control for compatible vehicles.

Detailed Product Description

The Four Seasons 74901 heater valve features a durable thermoplastic and steel construction, ensuring longevity and resistance to typical HVAC system conditions. It operates electrically via a single solenoid, controlling coolant flow through two 0.75-inch hose connectors. The valve includes two female terminals for electrical connection and is designed without a bypass port, maintaining direct flow control. This part is an exact OE replacement, making it suitable for maintaining factory performance in your BMW's heating system.

Compatible BMW Models and Applications

This heater valve is compatible with various BMW models, including the 325i, 325xi, 330i, 330xi, X1, X3, X5, and X6. It is specifically designed to integrate with the HVAC temperature control systems in these vehicles, ensuring proper heater function and cabin comfort.

Common Issues Addressed by Heater Valve 74901

• Inconsistent or no heat output from the HVAC system
• Coolant leaks around the heater valve connections
• Electrical failure causing heater valve malfunction
• Reduced cabin temperature control responsiveness
• Failure of original heater valve components due to wear

Installation Notes and Tips

• Mounting hardware is not included; reuse existing hardware or source separately
• Ensure proper electrical connection to the two female terminals
• Verify hose connector sizes (0.75 inch) match vehicle hoses
• Inspect surrounding HVAC components for wear during installation
• Follow vehicle-specific service manual instructions for heater valve replacement

Quality Assurance and Warranty

The Four Seasons Heater Valve 74901 is manufactured to meet or exceed original equipment standards. It is an OE replacement part, ensuring compatibility and reliable performance. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.