Komatsu Engine Seal Rear 6150-21-4230

Komatsu Engine Seal Rear 6150-21-4230 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 6150-21-4230 is listed as Seal Rear. Search also by the no-dash alternate number 6150214230.

Engine book references

This part appears in Komatsu engine parts book paths such as:

• ENGINES / S6D125-1AD S/N 41578-UP / CYLINDER BLOCK / FLYWHEEL AND FLYWHEEL HOUSING (0221)
• ENGINES / S6D125-1B8 S/N 22230-UP / CYLINDER BLOCK / FLYWHEEL AND FLYWHEEL HOUSING (0221)
• ENGINES / S6D125-1B8 S/N 22230-UP / ENGINE KIT / GASKET KIT (0991)
• ENGINES / S6D125-1B8-FA S/N 10001-UP / ENGINE / FLYWHEEL AND FLYWHEEL HOUSING(#22230-) (A2210-01B2)
• ENGINES / S6D125-1B8-FA S/N 10001-UP / ENGINE / GASKET KIT(#22230-) (A8110-01B3)
• ENGINES / S6D125-1JJ S/N 11574-UP / CYLINDER BLOCK / FLYWHEEL AND FLYWHEEL HOUSING (0222)

This part appears in 98 Komatsu engine book paths in our reference data.

Verification note

Always confirm final fitment by engine model, serial range, diagram callout, and part number before ordering. Hub references are provided to help buyers find the right engine section and related parts faster.

Keep Ops Moving

19PARTS organizes Komatsu engine parts around searchable engine-model hubs so rebuild shops, equipment owners, and fleet teams can identify parts and keep repairs moving.