One New Aftermarket Replacement Seal Kit that fits Komatsu Excavator Boom Swing Models: PC20-6 (SN: 24001-), PC25-1 (SN: 1001-), PC30-6 (SN: 10001-), PC30-7 (SN: 18001-) (All Cyl #: 20S-63-02240)Fits Komatsu Excavator Off-Set Model: PC38UU-1 (SN: 1001-, Cyl #: 21X-63-02040)Rod: 45mm, Bore: 85mmReplaces Part Number: HYI40-0125, 707-98-24510Please Note: Your Seal Kit May Look Slightly Different.
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