O-RING (Komatsu KO3EB-15-21290)

KO3EB-15-21290: A worn retaining ring can lead to component separation under load. This aftermarket replacement part references the Komatsu catalog number KO3EB-15-21290. The retaining ring functions as a mechanical fastener that holds assembled parts in a fixed position. A common failure consequence is that a broken ring allows shafts or bearings to shift, causing misalignment. During routine service, a technician may find a ring that has lost its tension. Verify the serial number or application, then call (562) 693-7748. Keeping a retaining ring in sound condition helps prevent unexpected disassembly during operation.

Part number variants: KO3EB-15-21290, ko3eb-15-21290, KO3EB1521290, ko3eb1521290