SPRING (CAT CT1921-64378)

CT1921-64378: A worn retaining ring can allow assembled components to separate during operation. This aftermarket replacement part references CAT as the OE maker and carries the cross-reference part number CT1921-64378. The spring-type retaining ring exerts radial pressure to secure a shaft or bore assembly. If the ring loses tension or breaks, the retained part may shift or dislodge, leading to mechanical jamming or detachment. Keeping the ring in sound condition helps maintain axial positioning under load. Verify the serial number or application, then call (562) 693-7748.

Part number variants: CT1921-64378, ct1921-64378, CT192164378, ct192164378