Komatsu Excavator Piston Ring 707-44-70070

Komatsu Excavator Piston Ring 707-44-70070 is part of the 19PARTS KOM line, developed for demanding heavy-equipment service where dependable fit, durability, and day-to-day uptime matter. This piston Ring 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, Dozer applications. Common machine models include: D21A, D21AG, D21P, D21PG, D21PL, D21Q, D21S, D31A, D31AM, D31P, D31PL, D31PLL, D355A, PC10. Reported category/application areas: BULLDOZERS, EXCAVATORS. Reported serial ranges include: 78604-UP (4D94E-1 (EMISSION) ENG. INSTALLED), 83001-UP (OVERSEAS VERSION), 83001-UP, 78604-UP, 75001-78603 (TRIMMING DOZER), 75001-78603, 78604-UP (TRIMMING DOZER (M/C)), 90001-90209 (INTERIM TIER4).

Part information

• Komatsu part number: 707-44-70070
• Alternate search number: 7074470070
• Product type: Piston Ring
• Usage-report description: RING,PISTON, RING,PISTON (K1), RING, RING,PISTON (KIT), RING, (KIT : K18)

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 707-44-70070, rely on 19PARTS to help you Keep Ops Moving™.