4220-01-218-9445 (8800-20-13)
4220-01-218-9445 is equivalent to manufacture part number 3901-27. It is a regulator cover and is classified under Federal Supply Class 4220 (4220 - Marine Lifesaving and Diving Equipment), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 4220 - Marine Lifesaving and Diving Equipment and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.