New Old Stock Distributor Vacuum Advance Diaphragm for the following 1968 Vehicles listed below with 225 Engine only.68 A-Body, B-Body & Plymouth/Dodge C-Body with Automatic, without Anti-Icing. Distributor # 2875366. Service/Vendor # 2875367.68 A-Body, B-Body & Plymouth C-Body with Automatic, without Anti-Icing. Distributor # 2875094. Service/Vendor # 2875094.68 D100/200 Pickup Truck after Serial # 1780000 Warren Built & 7020000 Missouri Built. Distributor # 2875366. Srvice/Vendor # 2875367.