Seal Kit 1989433 for Caterpillar Equipment

Seal kit 1989433 is a hydraulic cylinder sealing kit for Caterpillar equipment. It is used in the boom cylinder assembly, identified in the available application data as CYLINDER GP-BOOM, for Caterpillar model 305. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is listed as a hydraulic cylinder seals kit and is intended for installation in the sealing arrangement of the specified boom cylinder. The available product information identifies Caterpillar as the equipment manufacturer and model 305 as the applicable machine model. No additional machine series or model designations are specified in the source data.

Fitment

According to the available fitment information, seal kit 1989433 is associated with the boom cylinder group on Caterpillar 305 equipment. The data provided does not specify a broader list of Caterpillar machines, other cylinder groups, or separate installation positions. Compatibility should therefore be checked against the machine model, cylinder group, and existing part number before installation.

The supplied application description refers specifically to the boom cylinder rather than to a general hydraulic system component. This distinction is relevant when identifying the required seal kit, because hydraulic cylinders installed in different machine functions may use different sealing arrangements and part numbers.

Cross-reference numbers

The numbers 1989433, CA1989433, and 198-9433 are listed in the available data as identification or cross-reference numbers for this seal kit. The number 1989433 is also the product SKU and the primary part number shown for the kit.

Part-number formatting may differ between equipment parts catalogues, supplier catalogues, and inventory systems. The hyphenated form 198-9433 and the non-hyphenated form 1989433 are included here as separate catalogue representations of the supplied reference information. CA1989433 is also retained as a cross-reference used for identifying the same kit.

Specifications

The available technical data provides the kit weight as 0.19 lb. Individual seal types, seal dimensions, material specifications, quantity of seals, and the detailed contents of the kit are not specified in the supplied product information.

No separate measurements for the rod seal, piston seal, wiper, O-rings, backup rings, or other sealing elements are available in the source data. The kit contents should be verified against the applicable cylinder parts information when exact seal dimensions or a complete component list are required.