Case CX350B Seal Kits & Cylinders

Case CX350B Seal Kits & Cylinders parts list
Image	Fits Model	Description	Details	Part #	Price	Product Details
	See Details	CX330*, CX350B, CX350C	Dipper Arm Cylinder		LZ007320	$200.00	View Info

Hydraulic cylinder seal kits and cylinder components for Case CX350B excavators, covering dipper arm cylinder rebuilds and related hydraulic repairs on late-model large excavators.

Fits Models At A Glance

CX330 Series: CX330
CX350 Series: CX350B, CX350C

Key Notes

Application: Dipper arm cylinder rebuilds on large Case excavators
Kit Contents: Seals, wipers, and o-rings sized to OEM specs
Fitment: Confirm cylinder bore and rod size before ordering
Condition: New replacement seal kit components available

Why Choose Broken Tractor

✅ Fast shipping from two US warehouses
✅ Correct fitment verified against Case specs
✅ Knowledgeable staff who know excavator hydraulics

Frequently Asked Questions

What does the CX350B dipper arm cylinder seal kit include?

The Case Excavator Dipper Arm Cylinder Seal Kit (SKU LZ007320) includes seals, wipers, and o-rings sized to OEM specs for the dipper arm cylinder. These components are for rebuilding the hydraulic cylinder rather than replacing the entire cylinder. Confirm your cylinder bore and rod size before ordering to make sure the kit matches your machine.

Will the CX350B seal kit fit other Case excavator models?

The Dipper Arm Cylinder Seal Kit (SKU LZ007320) fits the Case CX330, CX350B, and CX350C excavators. Because dipper arm cylinder dimensions can vary, confirm your cylinder bore and rod size before ordering. If you are unsure, our parts team can help match the correct kit to your machine.

Should I rebuild the dipper arm cylinder or replace it on a CX350B?

Many leaking or worn dipper arm cylinders on the CX350B can be repaired with a seal kit rather than replaced. Broken Tractor carries the Dipper Arm Cylinder Seal Kit (SKU LZ007320) with new replacement seals, wipers, and o-rings for this rebuild. Rebuilding is often the more cost-effective option when the cylinder bore and rod are still in good condition.

How do I know if my CX350B dipper arm cylinder seals are worn?

Common signs of worn dipper arm cylinder seals include hydraulic oil leaking around the rod, the cylinder drifting or losing position under load, and slower or weaker dipper movement. Replacing the seals with the kit (SKU LZ007320) restores proper sealing when the cylinder bore and rod are not damaged. Confirm your bore and rod size before ordering the kit.