Excavator Engine Parts
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Fully finished flanged cylinder liner identified by Komatsu 6207-21-2120 for 4D95/6D95 engine families. Published catalogue dimensions are 95 mm bore, 98 mm outside diameter and 180 mm overall length. The old PC120-5 claim was removed because the reviewed catalogue supports PC60-6 and PC120-3, not that later machine suffix.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Komatsu Part Number | Fully finished flanged cylinder liner | 6207-21-2120 |
| Published Liner Family Variant | Different finish/revision; interchange not asserted | 6207-21-2110 |
| Published Liner Family Variant | Different finish/revision; interchange not asserted | 6207-21-2121 |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
3 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Recorded compatible model references include Published engine families: Komatsu 4D95 / 6D95 / S6D95, Published excavator examples: Komatsu PC60-6 / PC120-3, Fitment limitation: Confirm engine suffix, liner finish and serial range. Confirm the complete part number and machine serial range before ordering.
No alternate number is listed for 6207-21-2120. Send the original nameplate for an alternate-number check.
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
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