Komatsu 6731-21-4220 Front Seal Service Kit

Komatsu 6731-21-4220 Aftermarket Front Seal Service Kit

WQC Parts offers aftermarket Komatsu 6731-21-4220 front seal service kit for customers who need a clear, dependable replacement option backed by organized machine-usage data.

Part Information

• Komatsu part number: 6731-21-4220
• Alternate search number: 6731214220
• Product type: Front Seal Service Kit
• Usage-report description: SEAL,FRONT SEAL KIT, SEAL, KIT, FRONT SEAL SERVICE, SEAL KIT, FRONT (W/APPLICATION TOOL), SEAL (F1)

Known Machine Usage

Our Komatsu usage data links this part to Bulldozers, Excavators, Wheel Loaders applications.

Common machine models include: D31E, D31EX, D31P, D31PL, D31PLL, D31PX, D32E, D37E, D37EX, D37P, D37PX, D38E, D39E, D39EX.

Reported category/application areas: BULLDOZERS, EXCAVATORS, WHEEL LOADERS.

Reported serial ranges include: 42001-UP (FOR CHINA, 42001-UP (TRIMMING DOZER), 42001-UP, 50001-50499 (FOR NORTH AMERICA), 50001-50499, 50501-UP, 45001-UP (FOR C.I.S., 45001-UP (FOR CHINA.

Related or analog part numbers: 6735213510, 6735213511.

Fitment Notes

Always confirm final fitment by checking the Komatsu part number, machine model, serial range, and arrangement before ordering. The same part number can appear across multiple models or serial ranges depending on the machine configuration.

Why Choose WQC Parts?

WQC Parts focuses on WQ Certified aftermarket Komatsu parts for heavy equipment owners, repair shops, and fleet operators who need reliable replacement parts, organized product data, and support for keeping machines working.