Komatsu Heavy Equipment Relay 421-06-11940

Komatsu Heavy Equipment Relay 421-06-11940 is part of the 19PARTS KOM line, developed for demanding heavy-equipment service where dependable fit, durability, and day-to-day uptime matter. This relay 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: WA500, WA600, WA700, WA800, WA900, WA100, WA100SS, WA100SSS, WA120, WA150, WA180, WA200, WA250, WA300. Reported category/application areas: WHEEL LOADERS. Reported serial ranges include: 10001-UP (OVERSEAS VERSION), 10001-UP, A20854-UP, A60001-UP, A61001-UP, A10391-UP, A50001-UP, A51001-UP.

Part information

• Komatsu part number: 421-06-11940
• Alternate search number: 4210611940
• Product type: Relay
• Usage-report description: RELAY,(WITH AIR CONDITIONER), RELAY,AIR CONDITIONER, RELAY, RELAY,WORK LAMP, RELAY, AIR CONDITIONER

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 421-06-11940, rely on 19PARTS to help you Keep Ops Moving™.