RING - BACK UP (Komatsu KO3EA6413220)

KO3EA6413220: A damaged retaining ring can allow a shaft or bore component to shift out of position, leading to mechanical failure. During disassembly, a back-up ring may appear intact but lose its tension after removal. The function of this ring is to secure a component axially within a groove, preventing lateral movement under load. Keeping a retaining ring in sound condition helps maintain the intended clearance between assembled parts. This aftermarket replacement references Komatsu as the OE maker and carries the cross-reference part number KO3EA6413220. Verify the serial number or application, then call (562) 693-7748.

Part number variants: KO3EA6413220, ko3ea6413220