Univen blender lid filler cap compatible with Oster and Osterizer blenders. Comptible with Oster blender models 6640, 6641, 6642, 6643, 6644, 6645, 6646, 6647, 6662, 6663, 6664, 6667 & 6668. Compatible with Oster part number 83819-000-089. Quality part by Univen.