Part-number card (generic family drawing, not a photo of the part).
Komatsu · Structure, pins and bushings
Boom assembly Komatsu 421-877-4640
Short answer
The 421-877-4640 is a Komatsu part: boom assembly. We quote it in El Salvador, Guatemala, Nicaragua and Panamá as an authorized Komatsu dealer: send us the part number and your machine's serial.
Quote or order it in your country
The part number is already in the message. Have your machine's serial handy.
El Salvador
Guatemala
Nicaragua
Panamá
What it does
A structural or joint part: the pins, bushings, mounts and fasteners that keep the machine together and aligned.
Part data
- Part number
- 421-877-4640
- Brand
- Komatsu
- Catalog description
- BOOM ASS'Y
- Equivalents and supersessions
- No equivalents on record. If the number was superseded, your specialist gives you the current one.
Compatible models
Our records don't tie this part to a specific model. Tell us your machine's model and serial and we'll confirm it.
When to replace it
We don't publish an interval for this part: we have no attributed source. Check your machine's Operation and Maintenance Manual or ask the after-sales specialist.
Frequently asked questions
How do I order the 421-877-4640?
Pick your country under “Order it in your country” and message us on WhatsApp or with the form: the part number is already filled in. We confirm price and availability. We serve it in El Salvador, Guatemala, Nicaragua and Panamá.
Does the 421-877-4640 fit my machine?
Send us your machine's brand, model and the serial from its data plate and we confirm before quoting: the serial defines the exact part.
Is there an online price?
For now it is quoted: price depends on the country and same-day availability, and we give it to you in writing.