Komatsu 390-94-11 Seal Kit

Komatsu 6736-21-4221 390-94-11 Seal Kit is an aftermarket replacement designed for Komatsu equipment service and rebuild work. This seal kit helps restore sealing performance in hydraulic and related machine components to support reliable operation and reduce leakage.

Based on the current Komatsu books data, this part is used in Bulldozers, Excavators, Wheel Loaders, commonly referenced for Cylinder | Engine, Engine service, catalog references include models such as D31E-20, D31P-20, D31P-20A, D31P-20T, D31PL-20. Always confirm fitment by machine model and serial number before ordering.

Why order this Komatsu seal kit?

• Aftermarket replacement for Komatsu part 6736-21-4221
• Built for maintenance, leak repair, and component rebuild service
• Commonly used in Cylinder | Engine, Engine rebuild and sealing work
• Supported by WQC Parts fitment assistance

Catalog-referenced applications

• D31E-20
• D31P-20
• D31P-20A
• D31P-20T
• D31PL-20
• D31PLL-20
• D37E-5
• D37P-5A

Example serial references: 42001-UP; 42001-UP (FOR CHINA; 42001-UP (TRIMMING DOZER)

Cross references

Related reference numbers found in the current catalog data: 6732211310, 6732211311, 6736214220.

If you need help verifying compatibility for Komatsu 6736-21-4221, contact WQC Parts with your machine model, serial number, and component location for support.