Komatsu Engine Washer Tension Pulley 6124-61-3780

Komatsu Engine Washer Tension Pulley 6124-61-3780 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 6124-61-3780 is listed as Washer Tension Pulley. Search also by the no-dash alternate number 6124613780.

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 / S6D155-4-R S/N 10014-UP / COOLING AND ELECTRICAL SYSTEM / COOLING FAN AND FAN DRIVE(#30551-) (503)
• 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)
• ENGINES / S6D155-4B S/N 10016-UP / (1505)
• ENGINES / S6D155-4B S/N 10016-UP / COOLING AND ELECTRICAL SYSTEMS / COOLING FAN AND FAN DRIVE (1505)

This part appears in 13 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.