Komatsu Engine V-Belt Set Cooling Fan 04121-21743

Komatsu Engine V-Belt Set Cooling Fan 04121-21743 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 04121-21743 is listed as V-Belt Set Cooling Fan. Search also by the no-dash alternate number 0412121743.

Engine book references

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

• ENGINES / S6D102E-1C S/N 26200929-UP / ENGINE / CRANK PULLEY (LOW SPEED TYPE)(#26201318-) (A2370-01A2)
• ENGINES / S6D102E-1C S/N 26200929-UP / ENGINE / SPARE PARTS (NOISE SUPPRESSION SPEC.)(#26201318-) (A9020-01A1)
• ENGINES / S6D102E-1C S/N 26200929-UP / ENGINE / SPARE PARTS (ORDERING TRANSFERRED PARTS)(#26252548-26257385) (B9999-01D1)
• ENGINES / S6D102E-1C-6C S/N 26200163-UP / ENGINE / CRANK PULLEY (LOW SPEED TYPE)(#26201318-) (A2370-01B0)
• ENGINES / S6D102E-1C-6C S/N 26200163-UP / ENGINE / SPARE PARTS (NOISE SUPPRESSION SPEC.)(#26201318-) (A9020-01B8)
• ENGINES / S6D102E-1C-6C S/N 26200163-UP / ENGINE / SPARE PARTS (ORDERING TRANSFERRED PARTS)(#26252548-26257385) (B9999-01J5)

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.