Case CX31B Seal Kits & Cylinders

Case CX31B Seal Kits & Cylinders parts list
Image	Fits Model	Description	Details	Part #	Price	Product Details
	See Details	CX31, CX36, CX31B, CX36B	Boom Cylinder Seal Kit		PW01V00043R300	$74.00	View Info

Hydraulic seal kits and cylinder components for Case CX31B compact excavators, including boom cylinder seal kits that service the boom lift circuit across the CX31/CX36 mini excavator family.

Fits Models At A Glance

CX31 Series: CX31, CX31B
CX36 Series: CX36, CX36B

Key Notes

Application: Boom cylinder rebuild and resealing on compact excavators
Kit Contents: Seals, o-rings, and wipers matched to the boom cylinder bore
Condition: New replacement seal kits and cylinder components available
Fitment: Verify cylinder bore and rod dimensions before ordering

Why Choose Broken Tractor

✅ Compact excavator seal expertise you can trust
✅ Fast shipping from two US locations
✅ Correct fitment verified before every order

Frequently Asked Questions

What does the Case CX31B boom cylinder seal kit include?

The boom cylinder seal kit (SKU PW01V00043R300) includes seals, o-rings, and wipers matched to the boom cylinder bore. It is intended for rebuilding and resealing the boom lift cylinder on the CX31B. Confirm your cylinder bore and rod dimensions before ordering to ensure the correct match.

Does the CX31B boom cylinder seal kit fit other Case mini excavator models?

Yes, the boom cylinder seal kit (SKU PW01V00043R300) fits the CX31, CX31B, CX36, and CX36B compact excavators. It services the boom lift circuit across this CX31 and CX36 family. If you are unsure about your specific machine, match the part number or confirm fitment with our parts team.

Should I reseal or replace the boom cylinder on a Case CX31B?

If the cylinder barrel and rod are in good condition, a seal kit is usually all you need to stop leaks and restore performance. Broken Tractor carries the Case CX31B boom cylinder seal kit (SKU PW01V00043R300) with seals, o-rings, and wipers for a full reseal. Replacing full cylinder components is the better route when the bore or rod is scored or worn beyond service.

How do I confirm the correct seal kit for my Case CX31B?

Verify the cylinder bore and rod dimensions before ordering, since fitment depends on these measurements. Matching the part number PW01V00043R300 is the most reliable way to confirm you have the right kit. If you still need help, call our parts team at (800) 909-7060.