Menu

Home
Products
Parts
Engine
6631-21-4640

Engine

6631-21-4640

Shaft

Purchase options

Order on My Komatsu Find a dealer

Specification
360 View

Discover

Equipment

→
Parts

→
Services and support

→
Industries

→
Technology

→

Tools

Request a quote

→
Komatsu locator

→
My Komatsu

→
Competitive comparison tool

→
Mining Analytics Platform

→

Company

About us

→
Careers

→
Case studies

→
Commitment to society

→
Merchandise

→
Newsroom

→
Investor relations

→

Connect

Contact us

→
Social media channels

→
Customer / dealer portals

→
Suppliers

→

Komatsu is a leading manufacturer of construction, mining, forestry, and industrial heavy equipment.

Global corporate website

California Supply Chain Transparency Act

→
Privacy statement

→
Privacy notice for California residents

→
California Voluntary Carbon Market Disclosures Act

→
Cookie policy

→
Fighting Against Forced Labour and Child Labour in Supply Chains Act (Canada)

→
Modular Mining legal notices

→
Terms of use

→
Transparency in coverage

→
Sitemap

→

2025 Komatsu America Corp. All rights reserved.