Buick Parts 1946 - 1976
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A/C & Heater Duct Door Vacuum Diaphragm



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Part #YearModel ApplicationDescriptionPrice
VD23590159 - 62LeSabre-Invicta-Electra with A/C (3 required) for outside air inlet, defrost or diverter door 4" metal, 1 port. GM #1969458A/C & Heater duct door vacuum diaphragm$59.00
VD23591159 - 62LeSabre-Invicta-Electra with A/C (1 required) for outside air inlet, defrost or diverter door 4" metal, 1 port. GM #3146159A/C & Heater duct door vacuum diaphragm$56.00
VD23590563 - 75Most A/C models as required for outside air inlet, defrost or diverter door. 4" black plastic, 2 staggered-ports.GM #1998905 (1st type was white plastic & 63 Riviera 1st type lower was metal 2pc.) 63-65 Riviera uses 2 of these for upper and lowerA/C & Heater duct door vacuum diaphragm$59.00
VD23592165 - 70LeSabre-Wildcat-Electra with A/C (1 required) for diverter door 4" metal, 1 port.A/C & Heater duct door vacuum diaphragm$56.00
VD23592565 - 75LeSabre-Wildcat-Electra-Riviera with A/C (1 required) for diverter door 4" metal, 1 port.A/C & Heater duct door vacuum diaphragm$56.00