690GC339
HVAC Air Inlet Valve
Mack

This HVAC air inlet valve is engineered to control the intake of outside air into the vehicle’s climate control system. It plays a key role in maintaining interior air quality and temperature, directly affecting driver comfort and safety. Designed to endure harsh environmental conditions, it ensures consistent airflow and system efficiency. Malfunctioning or clogged inlet valves can lead to inadequate ventilation, reduced HVAC performance, and discomfort during operation. Regular checks and timely replacement of this component are essential to sustain optimal climate control, especially in extreme weather. Source One Parts Center offers high-quality HVAC parts that deliver reliable performance and longevity, supporting your vehicle’s climate management system.