Komatsu Engine V-Belt Set 04121-22270

Komatsu Engine V-Belt Set 04121-22270 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 04121-22270 is listed as V-Belt Set. Search also by the no-dash alternate number 0412122270.

Engine book references

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

• ENGINES / S6D125-1AF S/N 51975-UP / ENGINE / FAN PULLEY (NOISE SUPPRESION SPEC.) (A5050-A3A1)
• ENGINES / S6D125-1AG S/N 51975-UP / ENGINE / FAN PULLEY (HARDENING PULLEY TYPE) (A5050-A3A4)
• ENGINES / S6D125-1AG S/N 51975-UP / ENGINE / FAN PULLEY (NOISE SUPPRESION SPEC.) (A5050-A3A1)
• ENGINES / S6D125-1AG-FA S/N 10001-UP / ENGINE / FAN PULLEY (HARDENING TYPE)(#51975-) (A5050-A3A4)
• ENGINES / S6D125-1AG-FA S/N 10001-UP / ENGINE / FAN PULLEY (NOISE SUPRESSION SPEC. PULLEY DIA 212MM)(#51975-) (A5050-A3A1)
• ENGINES / S6D125-1JJ S/N 11574-UP / COOLING SYSTEM / COOLING FAN AND MOUNTING (0512)

This part appears in 12 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.