The part number is 26-0074. They are Military Surplus and the NSN Number is 2540-01-484-7770.
Heater Control Valve 218050, 26-0074
7PP819810A HVAC Heater Control Valve,Heater Control Valve Compatible with Porsch
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HVAC Heater Control Valve-Heater Valve 4 Seasons 74628
