K9001878 Boom Cylinder Seal Kit for Doosan DX225 Excavator

K9001878 Boom Cylinder Seal Kit

K9001878 is a hydraulic boom cylinder seal kit used for repair and maintenance of the boom cylinder on Doosan DX225 excavators. It is intended for cylinder resealing work when leakage, seal wear or reduced hydraulic holding performance appears during operation.

This product is supplied as a boom cylinder repair kit rather than a complete hydraulic cylinder assembly. For correct ordering, the original part number K9001878 should be checked first, and the machine model and removed seal kit should also be confirmed whenever possible.

Application and Ordering Check

The package label identifies this kit for Doosan DX225 boom cylinder application. Because excavator cylinder configurations may vary by production period, repair history or supply source, buyers should confirm the original part number, machine model and boom cylinder position before ordering.

If available, clear photos of the original kit label, machine nameplate or removed seal set can help improve fitment confirmation. When exact technical dimensions are required, they should be verified against the original parts information before purchase.

Boom Cylinder Repair and Inspection

Before installing a new boom cylinder seal kit, inspect the piston rod, cylinder tube, gland and piston carefully. Surface scoring, corrosion, deformation or abnormal wear can cause seal failure even after the new kit is installed.

All cylinder parts should be cleaned thoroughly before assembly. During rebuilding, each seal and ring should be installed in the correct direction and position. If the hydraulic system has contamination or the rod surface is damaged, the root cause should be corrected before returning the cylinder to service.

Seal Kit Supply Notes

K9001878 is supplied as a boom cylinder seal kit for maintenance use. Seal color, packaging style and supplied component appearance may vary by production batch or supply source, but the product should match the required boom cylinder repair application when the part number and fitment are correctly confirmed.

If your project requires a specific packaging format or seal-brand preference, please confirm this before ordering. For routine replacement needs, the key reference should remain the original K9001878 part number and machine application.

Topvelsun Supply Support

Topvelsun supplies excavator hydraulic cylinder seal kits through qualified supply channels with 1-piece MOQ and a 6-month warranty. To help confirm the correct part, send the OEM number, machine model and clear product or old-kit photos before ordering.