223-5944 Hydraulic Cylinder Seal Kit for CAT 420D 430D 430E Backhoe Loaders
223-5944 Hydraulic Cylinder Seal Kit Overview
223-5944 is an aftermarket hydraulic cylinder seal kit for Caterpillar 420D, 430D and 430E backhoe loaders. Professional cross-reference directories identify this part number with the bucket and stick cylinder applications used on these loader-backhoes. It is not a main hydraulic pump seal kit and is not intended for the CAT 336D excavator.
The bucket and stick cylinders work under repeated shock loads close to dirt and debris. A correctly matched reseal kit helps address oil leakage, cylinder drift and contamination entering through worn wipers. DJF Seals supplies this replacement kit to distributors, repair workshops and construction machinery parts businesses. Minimum order quantity is 5 kits per part number.
Verified Product Specifications
| Part number | 223-5944; 2235944; CA2235944 |
|---|---|
| Product type | Aftermarket hydraulic cylinder seal kit |
| Machine category | Backhoe loader |
| Cylinder application | Bucket and stick cylinders according to professional cross-reference data |
| Reference bore | 3-3/4 in (approximately 95 mm) |
| Reference rod | 2-3/4 in (approximately 70 mm) |
| MOQ | 5 kits |
Compatibility and Fitment
Confirmed models: Caterpillar 420D, 430D and 430E backhoe loaders.
Reference model: 438B is listed in professional cross-reference data. Machine model alone does not guarantee fitment; check the cylinder number, rod and bore before ordering.
Fitment Verification Checklist
- Confirm that the machine is a CAT backhoe loader, not an excavator.
- Confirm the application position: bucket or stick cylinder.
- Check the old kit number and cylinder identification.
- Measure the rod and bore; reference dimensions are approximately 70 mm rod and 95 mm bore.
- Send the machine model, serial number, cylinder tag and old-kit photos when confirmation is required.
Common Service Symptoms
- Oil seepage at the rod gland or oil streaks on the chrome rod
- Bucket or stick cylinder drift under load
- Reduced digging force caused by possible internal bypass
- Dirt entering the cylinder after wiper wear
Wholesale Ordering
MOQ: 5 kits per part number. Factory-direct wholesale supply for distributors, repair workshops and construction machinery parts companies. Mixed part-number orders and export packing are available. Email [email protected] or send the machine and cylinder details to request a quotation.
Frequently Asked Questions
Is 223-5944 a main pump seal kit for the 336D?
No. The verified application is a hydraulic cylinder seal kit for CAT 420D, 430D and 430E backhoe loaders.
Does it fit the CAT 430E?
Yes, 430E is listed with 420D and 430D in professional cross-reference data. Final confirmation should use the cylinder identification and dimensions.
What information is needed before ordering?
Please provide the part number, complete machine model, cylinder position, cylinder number and rod/bore dimensions.
