The GRACO 287902 is a manifold filter housing cap assembly with a diffuser support tube, designed for use in GRACO airless paint sprayers. It is typically constructed from durable plastic or composite materials and is intended to secure and protect the filter assembly within the sprayer, ensuring proper filtration and smooth operation of the equipment. Key Features: Filter Cap Repair Kit Durable plastic or composite GRACO 390, 390PC, Ultra 395, Ultra Max II 490/495/595, and other compatible models (see part numbers: 246384, 117828, 15G455, RAX517) Includes diffuser support tube for improved flow and filtration Designed for easy replacement and maintenance Reliable sealing to prevent leaks Supports consistent sprayer performance Applications:Used in GRACO airless paint sprayers for securing and protecting the filter assembly, ensuring proper filtration and smooth operation during painting and coating applications. Installation Notes: Using a genuine GRACO part ensures proper fit, optimal performance, and longevity of the sprayer. Non-genuine parts may compromise safety and equipment reliability. Ensure the sprayer is turned off and depressurized before installation Remove the old filter cap and inspect the filter housing for damage or debris Align the new cap and diffuser support tube correctly before tightening Check for leaks after installation and test the sprayer before use Regularly inspect the filter cap and housing for wear or damage Replace the filter cap as part of routine maintenance or if leaks are detected Clean the filter assembly during each maintenance cycle