RING - PISTON (Komatsu KO3EB-15-21240)

KO3EB-15-21240: A damaged retaining ring can allow a piston to shift out of position, leading to mechanical failure. This aftermarket replacement part references the Komatsu catalog number KO3EB-15-21240. The retaining ring functions as a fastener that holds the piston in place within its bore. When the ring fails, the piston may dislodge, causing loss of compression or contact with other components. During a rebuild, a worn or deformed retaining ring should be replaced to prevent internal damage. Verify the serial number or application, then call (562) 693-7748. This part is a generic type-level component used in various mechanical assemblies.

Part number variants: KO3EB-15-21240, ko3eb-15-21240, KO3EB1521240, ko3eb1521240