Komatsu Heavy Equipment Valve Seat YM123900-11080

Komatsu Heavy Equipment Valve Seat YM123900-11080 is part of the 19PARTS KOM line, developed for demanding heavy-equipment service where dependable fit, durability, and day-to-day uptime matter. This valve Seat 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: WA90, PC110R, PC95R, PW110R, PW95R. Reported category/application areas: WHEEL LOADERS, EXCAVATORS. Reported serial ranges include: HA970051-HA970238); WA95-3 (S/N HA980051-HA980375), HA970239-HA970315, 2265000001-UP, 2265000306-UP, 2265010001-UP, 21D5200001-UP, 21D5200330-UP, 21D5210001-UP. Related or analog part numbers from source data: YMR001699, RYM12390011080.

Part information

• Komatsu part number: YM123900-11080
• Alternate search number: YM12390011080
• Product type: Valve Seat
• Usage-report description: VALVE SEAT, GASKET, SEAT, SEAT, SUCTION VALVE

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 YM123900-11080, rely on 19PARTS to help you Keep Ops Moving™.