Komatsu Heavy Equipment Flange Bearing 421-20-15123

Komatsu Heavy Equipment Flange Bearing 421-20-15123 is part of the 19PARTS KOM line, developed for demanding heavy-equipment service where dependable fit, durability, and day-to-day uptime matter. This flange Bearing 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 Wheel Loader, Dozer applications. Common machine models include: WA400, WA420, WA430, WA450, WA450L, WA470, WA480. Reported category/application areas: WHEEL LOADERS. Reported serial ranges include: 70001-UP, 63001-UP, 60001-62999, 53001-UP, S/N 53001-UP, 50001-52999, A40001-UP, 15055-UP.

Part information

• Komatsu part number: 421-20-15123
• Alternate search number: 4212015123
• Product type: Flange Bearing
• Usage-report description: BEARING,KUC1FX16F6C3, BEARING,FLANGE, BEARING, SUPPORT, BEARING, FLANGE

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 421-20-15123, rely on 19PARTS to help you Keep Ops Moving™.