1990779 Knuckle/HS B for Caterpillar Equipment

The 1990779 Knuckle/HS B is a bucket linkage component used on Caterpillar telescopic boom loaders and excavator-loaders. The part is supplied as a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The catalog number is also written in hyphenated form as 199-0779. The dimensions and equipment applications below are provided for identification and compatibility verification before installation.

Fitment

The part is used on the following Caterpillar equipment models and machine series.

• Telescopic boom loader TH460B
• Telescopic boom loader TH560B
• Telescopic boom loader TH580B
• Excavator-loader 432E
• Excavator-loader 434
• Excavator-loader 434E
• Excavator-loader 434F
• Excavator-loader 434F2
• Excavator-loader 442E
• Excavator-loader 444
• Excavator-loader 444E
• Excavator-loader 444F
• Excavator-loader 444F2

Fitment is listed by Caterpillar model designation. The component is categorized as a bucket link part and is associated with the knuckle/HS B position in the applicable linkage assembly.

Cross-reference numbers

The number 199-0779 is the equipment-manufacturer catalog reference provided for this component. The SKU 1990779 is the unhyphenated product number used for the listed part.

Specifications

The dimensional data identifies the part by its outer diameter, inner diameter, and height. The listed length, width, depth, and weight are the additional catalog specifications for the 1990779 component.

Before installation, the part number, machine model, and dimensions should be checked against the removed component and the applicable parts documentation for the specific machine configuration.