Four Seasons 74926 HVAC Heater Control Valve

BMW X5 Heater Valve Replacement

The Four Seasons 74926 is a single solenoid electronic heater valve for HVAC temperature control systems. It is built with thermoplastic and steel components, uses an electric non-bypass design, and features two connectors with a 2-pin terminal layout for direct system integration.

Compatible with 2001-2006 BMW X5 models without ATC (Automatic Temperature Control), this heater valve is a direct-fit solution for restoring coolant flow control through the heater circuit. Four Seasons backs this Heater Valve line with more than 50 years of mobile A/C experience and product testing focused on long-term operation.

Key Features

• Four Seasons part number 74926
• Single solenoid electronic heater valve
• Electric valve operation with non-bypass style
• Thermoplastic / steel construction
• 2 connectors and 2 terminal pins
• Opening size: 0.79 in. / 19.96 mm
• Direct replacement for BMW X5 heater control applications

Detailed Description

The Four Seasons Heater Valve line is engineered for HVAC temperature control performance in vehicle heating systems. Part number 74926 is designed as an electronic heater control valve that regulates coolant flow through the heater core, helping the climate system respond correctly to temperature commands. For BMW X5 owners, this component matches 2001-2006 vehicles without ATC and supports proper heater circuit operation in the original application.

This part cross-references Gates EHV111 for the same application. It also aligns with OE-style interchange references used in BMW X5 heater valve service, including 64116920226 and 64118379921.

What It Helps Fix

• No heat from the cabin vents
• Heat stuck on or unable to regulate temperature
• Coolant flow issues through the heater circuit
• HVAC temperature control response problems
• Leaking or electrically failed heater valve assemblies

Installation Notes and Tips

Verify the vehicle is a 2001-2006 BMW X5 without ATC before ordering. Match the connector count, terminal pin layout, and valve style to the original unit, and confirm the opening dimensions and non-bypass configuration during replacement. Inspect related HVAC and coolant system components for wear, contamination, or electrical faults before installing the new valve.

Quality Assurance

Four Seasons states that its HVAC products are engineered and tested for years of trouble-free operation. The Heater Valve product line is supported by the company’s long-standing mobile A/C experience and focus on correct-fit replacement parts.