707-99-72310 Boom Cylinder Service Kit for Komatsu PC400-7 / LC-7

707-99-72310 is a hydraulic cylinder service kit for the boom cylinder installed on Komatsu PC400-7 and PC400 LC-7 excavators. The kit is intended for servicing the boom cylinder on equipment manufactured by Komatsu. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified as a service kit for the boom hydraulic cylinder. Its application is limited to the boom cylinder system of the specified Komatsu excavator models and does not identify service kits for other cylinders on the machine, such as the arm or bucket cylinders.

The supplied product information identifies the application by machine series and cylinder position. It does not provide an itemized list of the sealing elements or other service components included in the kit. The exact contents should therefore be checked against the cylinder configuration and the required service procedure before installation.

Fitment

• Komatsu PC400-7 excavator
• Komatsu PC400 LC-7 excavator
• Boom cylinder of the specified excavator models

The designation “PC400-7 / LC-7” refers to the equipment series listed for this service kit. The kit is described for use with the boom cylinder, which is the hydraulic actuator responsible for movement of the excavator boom. The available data does not list additional Komatsu machine models, production variants, or serial-number ranges.

When checking compatibility, the machine model designation and the cylinder position should both correspond to the information above. A model from another series or a different hydraulic cylinder position is not confirmed by the supplied product data. Cylinder identification details such as bore size, rod diameter, seal-groove dimensions, and serial-number applicability are not provided.

Cross-reference numbers

• 707-99-72310

707-99-72310 is the product SKU and the only part number supplied for this service kit. No additional Komatsu reference number, supplier number, superseded number, or cross-reference number is provided in the available product information. No other part number is assigned here without a reliable source.

Specifications

The available description does not state the number of seals, rings, wear components, or other parts supplied in the kit. It also does not specify seal material, individual component dimensions, cylinder bore, rod diameter, operating pressure, weight, or packaging configuration. These parameters are not added because they are not confirmed for SKU 707-99-72310.