Description Mack Receiver Dryer Replaces OEM: RD-5-4727-1 Description: Receiver Drier Application: Red Dot – Multi Applications Diameter: 3″ Length: 6 1/2″ Inlet: Male Insert O’Ring Inlet Size: 3/8″ #6 Outlet Size: 3/8″ #6 Site Glass Location: Top Fuse Plug: Side Material: Steel Refrigerant Type: R12/R134a O-Ring #1: 0011 Switch Port Type: 1/4″ Male R12 Notes: Supplied with Side Trinary Switch Reference Numbers 7128, 319064, 4379-RD5-6132-0, 07-2614A, RD-5-4727-1