2805-00-288-0697 (4F9889)
NSN 2805-00-288-0697 (NIIN 00-288-0697) is a piston ring set in Federal Supply Class 2805, Gasoline Reciprocating Engines, Except Aircraft; And Components — two or more complete ring, piston grouped for a single piston or for all pistons of an internal combustion engine, air compressor, or the like. Manufacturer part number 4F9889 (Caterpillar Inc, CAGE 11083); also referenced as 3648 (Muskegon Piston Ring Co Muskegon).
NIIN assigned January 1963; DEMIL A (none required); export Schedule B 8409.91.8000. Supersedes 2805-00-516-9226 (1960), 2805-00-386-2939 (1963).