Komatsu Heavy Equipment Water Pump Assembly YM129327-42100

Komatsu Heavy Equipment Water Pump Assembly YM129327-42100 is part of the 19PARTS KOM line, developed for demanding heavy-equipment service where dependable fit, durability, and day-to-day uptime matter. This water Pump Assembly is manufactured in Italy in an ISO-certified facility with more than 50 years of production experience and is backed by our Keep Ops Moving™ commitment.

Why buyers choose the 19PARTS KOM line

• Manufactured in Italy for heavy-equipment applications
• Produced in an ISO-certified facility with more than 50 years of manufacturing experience
• Built for dependable performance in Komatsu assemblies
• Supported by 19PARTS and our Keep Ops Moving™ commitment

Fitment hint from source data

Source usage data links this part to Excavator, Wheel Loader, Dozer applications. Common machine models include: WA30, PW20, PW30, PW30T, PC20, PC30, PC38UU. Reported category/application areas: WHEEL LOADERS, EXCAVATORS. Reported serial ranges include: 3001-UP, 1001-UP, 14001-UP, 18001-UP, 24001-UP, 2601-UP, 6001-UP, 10001-UP.

Part information

• Komatsu part number: YM129327-42100
• Alternate search number: YM12932742100
• Product type: Water Pump Assembly
• Usage-report description: WATER PUMP ASS'Y

Fitment and verification

Use the model-specific hubs and diagram callouts on our site to verify the correct Komatsu part number, callout location, and serial-range fitment before ordering. The hubs provide the machine-specific authority, while this product page focuses on quality, sourcing, and buying confidence.

Brand and quality

The 19PARTS KOM line is built around practical uptime: quality-focused Komatsu replacement parts, transparent identification, and support for customers who need to keep machines working. For part number YM129327-42100, rely on 19PARTS to help you Keep Ops Moving™.