Komatsu Engine Lock Tension Pulley 6127-61-3790

Komatsu Engine Lock Tension Pulley 6127-61-3790 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 6127-61-3790 is listed as Lock Tension Pulley. Search also by the no-dash alternate number 6127613790.

Engine book references

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

• ENGINES / S4D155-4 S/N 10287-50040 / COOLING SYSTEM / COOLING FAN AND FAN DRIVE(#10287-) (505)
• ENGINES / S4D155-4 S/N 10287-50040 / TOOL AND KIT / KIT(#10287-) (991)
• ENGINES / S6D155-4-R S/N 10014-UP / COOLING AND ELECTRICAL SYSTEM / COOLING FAN AND FAN DRIVE(#30551-) (503)
• ENGINES / S6D155-4-R S/N 10014-UP / ENGINE KIT / GASKET KIT(#56577-) (991)
• ENGINES / S6D155-4A S/N 10014-UP / COOLING AND ELECTRICAL SYSTEMS / COOLING FAN AND FAN DRIVE (1505)
• ENGINES / S6D155-4AA S/N 25887-UP / COOLING SYSTEM / TENSION PULLEY (0515)

This part appears in 268 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.