Komatsu Engine Gear Crankshaft 6150-31-1121

Komatsu Engine Gear Crankshaft 6150-31-1121 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 6150-31-1121 is listed as Gear Crankshaft. Search also by the no-dash alternate number 6150311121.

Engine book references

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

• ENGINES / S6D125-1AD S/N 41578-UP / CYLINDER BLOCK / CRANKSHAFT (0231)
• ENGINES / S6D125-1AF S/N 51975-UP / ENGINE / CRANKSHAFT(#51975-62861) (A2310-A3A2)
• ENGINES / S6D125-1AG S/N 51975-UP / ENGINE / CRANKSHAFT(#51975-62861) (A2310-A3A2)
• ENGINES / S6D125-1AG-FA S/N 10001-UP / ENGINE / CRANKSHAFT (HIGH ALTITUDE SPEC.)(#51975-) (A2310-A3A2)
• ENGINES / S6D125-1AG-FT S/N 10001-UP / ENGINE / CRANKSHAFT (HIGH ALTITUDE SPEC.)(#51975-) (A2310-A3A2)
• ENGINES / S6D125-1AG-T S/N 51975-UP / ENGINE / CRANKSHAFT(#51975-62861) (A2310-A3A2)

This part appears in 77 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.