Caterpillar 3S-9975 Piston Clutch

Caterpillar 3S-9975 Piston - Clutch is a genuine Cat replacement part, cataloged as 3S-9975 with Classic Part Number 260-0778. Identified in Caterpillar’s Classic Parts Product Book as Piston - Clutch, this component is a dedicated piston used within Cat clutch assemblies to actuate the clutch mechanism. As an official Cat part, it is designed to meet Caterpillar’s engineering standards for fit, material quality, and durability in transmission work on Caterpillar equipment, and its 3S-9975 designation helps service teams verify the correct replacement against the original equipment. The Classic Part Number 260-0778 provides cross-reference data in Cat catalogs and dealer networks, aiding ordering and inventory. Because this item is a specialized clutch piston rather than a full clutch assembly, installation and compatibility should be confirmed with Caterpillar service literature or a Cat dealer to ensure correct application in your machine’s transmission and clutch housing, and to obtain the proper installation guidance.