Four Seasons 74915 HVAC Heater Control Valve

Four Seasons 74915 Heater Valve Overview

The Four Seasons 74915 is an OE replacement HVAC heater control valve for BMW applications that use a solenoid with an auxiliary coolant pump electronic heater valve. It is built for direct replacement service in the heating and cooling system, helping regulate coolant flow through the heater circuit on select BMW M3 and BMW Z3 models.

Compatible With 2001-2006 BMW M3 and 2001-2002 BMW Z3 heater valve applications, this Four Seasons heater valve supports accurate temperature control and system operation. The Four Seasons Heater Valve line focuses on replacement parts that match original equipment function for service repairs.

Key Features

• HVAC heater control valve for coolant flow management
• Solenoid with auxiliary coolant pump electronic heater valve design
• OE replacement part for original-style service
• Four Seasons 74915 part number for direct identification
• Fits BMW M3 and BMW Z3 heater valve applications

Detailed Description

This HVAC heater control valve is used in the temperature control system to regulate hot coolant flow to the heater core. By opening and closing as commanded by the vehicle’s electronic control system, it helps maintain proper cabin heat output and stable HVAC performance. This part cross-references URO 64118369807 for the same application. For buyers searching for a BMW M3 heater valve or BMW Z3 heater valve replacement, Four Seasons 74915 provides an OE-style service part for the listed vehicles.

Common Issues This Part May Resolve

• No heat from the cabin vents
• Heat stuck on or unable to regulate temperature
• Intermittent heater output during driving
• Coolant flow control problems in the HVAC circuit
• Faulty electronic heater valve operation

Installation Notes and Tips

Verify the original valve style and connector layout before installation. Confirm the vehicle uses the solenoid with auxiliary coolant pump electronic heater valve configuration, and inspect nearby coolant hoses and electrical connections for wear or leakage during service. After installation, refill and bleed the cooling system according to BMW service procedures to remove trapped air and restore proper heater performance.

Quality Assurance

Four Seasons supplies OE replacement HVAC components for service applications, and this heater valve is identified by part number 74915 for accurate ordering and fitment verification.