4C4788 O Ring Kit Fits CaterpillarOne New Aftermarket Replacement O Ring Seal Kit Fits Caterpillar (Fits CAT) Equipment This aftermarket replacement O ring seal kit Fits Caterpillar (Fits CAT) OEM part number 4C 4788 (also cataloged as 270 1537). It is a metric straight thread (ISO 6149 Metric STOR) port O ring assortment designed for sealing metric hydraulic adapters, fittings, and port connections on Fits Caterpillar construction and industrial equipment. The kit is also included as
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