1278987 Ring-Retaining Fits Caterpillar Models
1278987 Ring-Retaining Fits Caterpillar Models
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One New Aftermarket Replacement Retaining Ring for Caterpillar (Cat) Heavy Equipment
This aftermarket replacement retaining ring replaces Caterpillar (Cat) OEM part number 1278987 (formatted as 127-8987). Per the Cat Parts Store, this is a carbon steel retaining ring designed for installation in machined grooves, with a 55.80mm internal diameter. Multiple aftermarket sources, including agkits.com, identify this part as a hydraulic pump retaining ring used across Caterpillar construction equipment. Retaining rings of this type secure components within bored housings and machined assemblies, preventing axial movement during operation.
Specifications
- Type: Internal retaining ring for machined grooves
- Material: Carbon steel
- Internal Diameter: 55.80mm
Compatible Models
Caterpillar (Cat): Fits Caterpillar heavy equipment - verify fitment by model and serial number at parts.cat.com before ordering.
Replaces Part Number(s):
1278987, 127-8987
New aftermarket replacement part - not remanufactured, not used.
