Seamless Compatibility: Designed specifically for and shop vacuums, this filter nut fits VF4000 models made before 2010. It ensures a perfect match, eliminating concerns about compatibility issues and enhancing vacuum performance. Direct Replacement: Replace old or parts with ease using this filter nut, compatible with part numbers 73316, 9-16938, and 83872. It's ideal for 4, 9, 11, 12, and 16-gallon wet/dry vac models, ensuring your equipment functions like . Enhanced Vacuum Efficiency: By securing the filter plate/adapter firmly, this filter nut optimizes suction and filtration. It's essential for maintaining performance in both wet and dry conditions, helping you tackle any cleaning task efficiently. Construction: Crafted from robust materials, this filter nut withstands regular use without cracking or stripping. Its durability ensures long-lasting reliability, making it a smart investment for routine maintenance. Value Pack: Each package includes six filter nuts, providing ample replacements to keep your shop vacuum running smoothly. Having extras on hand saves time and hassle, ensuring you're prepared for any maintenance needs. (The actual product may have a slight color difference, which does not affect the use) Color: White Material: plastic Package Contents: 6 * Filter Nut Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.