RING - BACK UP (Nissan NICK2741749)

A worn retaining ring can allow assembled components to separate during operation. The RING - BACK UP is an aftermarket replacement part, cross-referenced to Nissan part number NICK2741749. This type of ring provides a mechanical shoulder that prevents axial movement of adjacent parts. When a backup ring fails, the loss of positional restraint can lead to component misalignment or disengagement. Keeping a retaining ring in sound condition helps maintain the intended assembly stack-up. The part is a generic type-level component, not a system-specific item. Verify the serial number or application, then call (562) 693-7748.

Part number variants: NICK2741749, nick2741749