One New Aftermarket Replacement Fits CAT Excavator Boom/ Offset Cylinder Seal Kit that fits the following models:
Boom: 307, Cylinder: 1057468, 1239937
Offset: 307, Cylinder: 1057468, 1239937, 307B, Cylinder: 1239937
PLEASE NOTE: YOUR SEAL KIT MAY LOOK SLIGHTLY DIFFERENT.
Rod: 55 mm, Bore: 100 mm
Replaces Part Number: 1057480
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