3098641
Dash Control Valve
Volvo

Dash Control Valve is a precision component within the dash control subsystem of Volvo heavy trucks. This valve regulates the distribution of air to dash actuators and associated climate and instrument controls, ensuring consistent operation of HVAC blend doors, defog/defrost controls, and indicator circuits under all driving conditions. A healthy valve translates to reliable cabin comfort and clear instrumentation, even as ambient temperatures swing and road conditions change. The replacement part is engineered to match OEM specifications, including port configuration and mounting footprint, so it installs without modification and preserves original line routing. Its design accommodates the vibration and thermal cycling typical of long-haul service, helping resist creeping leaks, sticky seats, or reduced flow that can degrade dash response. Correct valve sizing and installation are essential: an incorrect port arrangement or pressure range can cause over- or under-pressurization of connected actuators, resulting in erratic cabin performance or improper climate mode changes. When dash controls feel slow, stiff, or sporadic, choosing the proper Dash Control Valve restores precise control and operator confidence. Source One Parts Center.