1S0666 Adapter-Reducer Fits Caterpillar Models
1S0666 Adapter-Reducer Fits Caterpillar Models
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One New Aftermarket Replacement Adapter-Reducer for Caterpillar (Cat) Equipment
This adapter-reducer is a hydraulic or fluid-system fitting used to connect lines of differing thread sizes or diameters on Caterpillar (Cat) engines and machines. It is a direct aftermarket replacement for OEM Caterpillar part number 1S-0666, compatible with a wide range of Cat engines, dozers, wheel loaders, scrapers, skidders, and pipe layers.
Compatible Models
Caterpillar Engines: 3160, 3406, 3406B, 3406C, 3406E, 3456, G3304, G3306, G3406, C-15, C-16, C18, C27
Caterpillar Dozers / Track-Type Tractors: D3, D4C
Caterpillar Wheel Loaders: 910, 920, 930, 930R, 950, 966C, 966R, 980, 980B
Caterpillar Track Loaders: 931B
Caterpillar Motor Graders / Scrapers / Pipelayers: 613, 518, 518C, 528, 528B, 530B, FB518
Caterpillar Compactors: 814, 815, 816
Note: This list is not exhaustive. Additional compatible models may exist. Verify fitment against your machine serial number before ordering.
Replaces Part Number(s):
1S0666, 1S-0666
New aftermarket replacement part - not remanufactured, not used.
