Four Seasons 74928 HVAC Heater Control Valve

Four Seasons 74928 Heater Valve Overview

The Four Seasons 74928 heater valve is a single-solenoid electronic heater valve built with a steel body and a non-bypass design. It uses an electric valve operation with 2 connectors and 2 terminal pins for controlled coolant flow in the HVAC system.

Compatible With 2006-2011 Mercedes-Benz E350 and 2007-2008 Dodge Sprinter 2500 / Sprinter 3500 heater valve applications, this part is a direct-fit HVAC temperature control component for vehicles that rely on electronic coolant shutoff. Four Seasons heater valve 74928 is engineered and tested for dependable operation in demanding mobile A/C and heating systems.

Key Features

• Single solenoid electronic heater valve
• Steel construction for HVAC service durability
• Electric valve operation with non-bypass style
• 2 connectors and 2 terminal pins
• Opening dimensions: 0.86 in (21.74 mm) and 0.73 in (18.43 mm)
• Four Seasons Heater Valve line for temperature control service

Product Details

Four Seasons 74928 is an HVAC heater control valve used to regulate heater core coolant flow through the vehicle’s temperature control system. In Mercedes-Benz E350 and Dodge Sprinter applications, the valve helps maintain proper cabin heat control by opening and closing electronically based on system demand. The Four Seasons Heater Valve product line focuses on replacement components for mobile climate control systems, and this part reflects that approach with an OE-style electronic design and steel construction.

This part cross-references Gates EHV113 for the same application.

Common Issues This Part May Address

• No heat from the vents due to restricted coolant flow
• Heat stuck on because the valve does not close properly
• Intermittent cabin temperature control
• Coolant flow control faults in electronic HVAC systems
• Heater valve leakage or sticking

Installation Notes and Tips

Verify connector style, terminal count, and valve orientation before installation. Confirm the vehicle uses the correct electronic heater valve configuration for the listed Mercedes-Benz E350 or Dodge Sprinter 2500 / Sprinter 3500 application. Inspect hoses, electrical connectors, and coolant condition during replacement, and bleed the cooling system according to factory service procedures after installation.

Quality Assurance

Four Seasons states that its HVAC products are engineered and tested for long service life, backed by more than 50 years of mobile A/C experience. Part number 74928 is built for direct replacement use in the listed heater valve applications.