Komatsu Engine O-Ring 6219-81-1991

Komatsu Engine O-Ring 6219-81-1991 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 6219-81-1991 is listed as O-Ring. Search also by the no-dash alternate number 6219811991.

Product code / ETP anchor: 6216-84-9740. 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 / SAA12V140E-3A S/N 500001-UP / ENGINE / CYLINDER BLOCK ACCESSORY (OIL SENSOR¤ SWITCH AND WATER LINE BLIND COVER) (A2011-A7B7)
• ENGINES / SAA12V140E-3A S/N 500001-UP / ENGINE / CYLINDER BLOCK ACCESSORY (OIL SENSOR¤ SWITCH AND WATER LINE HEATER)(#500100-) (A2011-A7C4)
• ENGINES / SAA12V140E-3A S/N 500001-UP / ENGINE / CYLINDER BLOCK GASKET KIT (FOR D475A-5) (A8120-A7A1)
• ENGINES / SAA12V140E-3A S/N 502127-UP (For D475A-5E0/D475ASD-5E0) / ENGINE CYLINDER BLOCK AND ITS RELATED PARTS / CYLINDER BLOCK ACCESSORY / CYLINDER BLOCK ACCESSORY (#502249-) (A2011-001001)
• ENGINES / SAA12V140E-3A S/N 502127-UP (For D475A-5E0/D475ASD-5E0) / ENGINE CYLINDER BLOCK AND ITS RELATED PARTS / CYLINDER BLOCK ACCESSORY, WITHOUT ENGINE OIL PAN AND COOLANT HEATER, COLD AREA SPECIFICATION A (-30 DEG C) / CYLINDER BLOCK ACCESSORY (#502249-) (A2011-002001)
• ENGINES / SAA12V140E-3B S/N 500001-UP / ENGINE / CYLINDER BLOCK ACCESSORY (BLIND COVER AND SENSOR) (PRE-LUB SPEC.)(#500801-) (A2011-A7D1)

This part appears in 99 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.