Komatsu Engine V-Belt Set Cooling Fan 04121-21744

Komatsu Engine V-Belt Set Cooling Fan 04121-21744 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 04121-21744 is listed as V-Belt Set Cooling Fan. Search also by the no-dash alternate number 0412121744.

Engine book references

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

• ENGINES / S6D102E-1C S/N 26200929-UP / ENGINE / CRANK PULLEY (HARDENING)(#26201318-26257385) (A2370-01A3)
• ENGINES / S6D102E-1C S/N 26200929-UP / ENGINE / CRANK PULLEY (NON HARDENING)(#26201318-) (A2370-01A1)
• ENGINES / S6D102E-1C S/N 26200929-UP / ENGINE / SPARE PARTS (FOR 35A BRUSHLESS ALTERNATOR) (ORDERING TRANSFERRED PARTS)(#26252548-) (B9999-01C6)
• ENGINES / S6D102E-1C S/N 26200929-UP / ENGINE / SPARE PARTS (FOR 35A BRUSHLESS ALTERNATOR)(#26201318-26225115) (A9020-01A2)
• ENGINES / S6D102E-1C S/N 26200929-UP / ENGINE / SPARE PARTS (FOR 35A BRUSHLESS ALTERNATOR)(#26225116-26257385) (A9020-01A8)
• ENGINES / S6D102E-1C S/N 26200929-UP / ENGINE / SPARE PARTS(#26201318-26225115) (A9020-01A0)

This part appears in 31 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.