Komatsu Engine O-Ring 6553-21-8140

Komatsu Engine O-Ring 6553-21-8140 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 6553-21-8140 is listed as O-Ring. Search also by the no-dash alternate number 6553218140.

Product code / ETP anchor: 6553-21-8110. This listing is tied back to the sourcing anchor used for catalog control.

Engine book references

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

• ENGINES / SA12V140-1C-A S/N 10001-UP / ENGINE / FUEL INJECTION PUMP (GOVERNOR) (L.H.) (1/2) (FOR ELECTRICAL GOVERNOR) (INNER PARTS)(#10034-) (A4010-D7A8)
• ENGINES / SA12V140-1C-A S/N 10001-UP / ENGINE / FUEL INJECTION PUMP (GOVERNOR) (R.H.) (1/2) (FOR ELECTRICAL GOVERNOR) (INNER PARTS)(#10034-) (A4010-H7A8)
• ENGINES / SA12V140-1C-A S/N 10001-UP / ENGINE / FUEL INJECTION PUMP (PUMP) (L.H.) (1/2) (FOR ELECTRICAL GOVERNOR) (INNER PARTS)(#10034-) (A4010-B7A8)
• ENGINES / SA12V140-1C-A S/N 10001-UP / ENGINE / FUEL INJECTION PUMP (PUMP) (R.H.) (1/2) (FOR ELECTRICAL GOVERNOR) (INNER PARTS)(#10034-) (A4010-F7A8)
• ENGINES / SA12V140-1Q-A S/N 10001-UP / ENGINE / FUEL INJECTION PUMP (GOVERNOR) (L.H.) (1/2) (FOR ELECTRICAL GOVERNOR) (INNER PARTS)(#10034-) (A4010-D7A8)
• ENGINES / SA12V140-1Q-A S/N 10001-UP / ENGINE / FUEL INJECTION PUMP (GOVERNOR) (R.H.) (1/2) (FOR ELECTRICAL GOVERNOR) (INNER PARTS)(#10034-) (A4010-H7A8)

This part appears in 43 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.