The Caterpillar 306 is a mini excavator in the six-ton size class. Hydraulic Cylinders, Inc. builds replacement hydraulic cylinders and parts to fit it. Select parts ship the same day on FASTSHIP when you order by noon CST, and Buy Now, Pay Later is available at checkout. Explore the full Caterpillar lineup, and Demolish Downtime.
The Caterpillar 306 is a six-ton-class mini excavator used for digging, trenching, and backfilling on utility, landscaping, and small construction jobs. HCI carries replacement hydraulic cylinders and parts to keep it working.
Every cylinder and part on this page lists its OEM cross-references, so you can match them against the numbers on your old unit. Still unsure? Call our team at 888-771-1894 to confirm fitment — have your serial or the number on the old cylinder ready — or browse the full Caterpillar catalog to find your model.
Any item that shows the FASTSHIP logo and is marked In Stock ships the same day when you order by 12:00 PM CST, Monday through Friday.
