This is an A/C evaporator core, the component inside the HVAC housing that cools cabin air by absorbing heat from refrigerant as it evaporates. Pro Gear and Transmission sells this evaporator core as a part for technicians replacing a failed or leaking core in the cab climate system.Interchanges:MBA9065010201WA906-20-8636FeaturesA/C Evaporator CoreDesigned as a direct replacement for cab climate control systems