Komatsu Engine Bolt 6110-21-6520

Komatsu Engine Bolt 6110-21-6520 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 6110-21-6520 is listed as Bolt. Search also by the no-dash alternate number 6110216520.

Engine book references

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

• ENGINES / S4D120-11F S/N 50026-UP / COOLING AND ELECTRICAL SYSTEMS / DYNAMO AND MOUTING(13A¤20A) (521)
• ENGINES / S4D120-11G S/N 50025-UP / COOLING AND ELECTRICAL SYSTEMS / DYNAMO AND MOUTING(13A¤20A) (521)
• ENGINES / S4D120-11S S/N 59235-UP / COOLING AND ELECTRICAL SYSTEMS / DYNAMO AND MOUTING(13A) (521)
• ENGINES / S4D120-11S S/N 59235-UP / LUBRICATING OIL SYSTEM / LUBRICATING OIL COOLER PIPING (345)

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.