- Cylinder Rebuild/Repair Seal Kit for Caterpillar Model 943 & 943B Crawler Loader
- All Serial Numbers (03Y1-UP; 04Z1-UP; 19Z1-UP; 31Y1-UP)
- Cylinder #: 4T1963, 9J0532
- Rod: 2-1/4"
- Bore: 4"
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