Cylinder, Boom

Part Number

Our used Komatsu Cylinder, Boom is an excellent alternative to OEM parts for your machine. When high-quality is a requirement and lower costs are necessary, our rebuilt Cylinder, Boom is the solution for you.


  • Fits KOMATSU PC300HD-7L, PC300-7, PC300-7-AA, PC300-7E0, PC300-8, PC300HD-7E0, PC300LC-7, PC300LC-7-BA, PC300LC-7E0, PC300LC-7L, PC300LC-8, PC300LL-7E0, PC300LL-7L, PC340LC-7K, PC340LC-7K-E0, PC340NLC-7K, PC340NLC-7K-E0, PC350-7, PC350-7-AA, PC350-7E0, PC350-8, PC350LC-7, PC350LC-7-BA, PC350LC-7E0, PC350LC-8, PC350NLC-8, PC360-7 and PC380LC-7K models.
  • All rebuilt parts come with a 6-month warranty.


H&R Construction Equipment Parts is a leading supplier of new and used parts since 1984 for the major manufacturers of excavators, wheel loaders, bulldozers, articulated trucks, and skid steers. Our warehouses consists of over 140,000 sq. ft. of space to house our inventory, along with 40 acres of outside storage.

Contact a Parts Specialist today at (800) 333-0650 for more information.


  WARNING: Cancer and Reproductive harm. See

More Information
SKU HR00012127
Make Komatsu
Model PC300HD-7L
Part Number 707-01-0A430
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