
+ applicable tax
Your bucket cylinder is leaking. Hydraulic oil is running down the cylinder rod, pooling on the boom, and dripping onto the ground. Every drop is money — and every hour you run it, the cylinder bore is getting contaminated with dirt that's destroying the internal finish.
Fix it now before a $200 seal job becomes a $3,000 cylinder rebuild.
Hydraulic cylinder seals wear out from three things:
Once the rod seal starts leaking, dirt enters the cylinder bore. This scores the bore surface and damages the piston seal too. The longer you wait, the more expensive the repair becomes.
Everything you need in one bag. No chasing individual seals from multiple suppliers.
This kit is specifically for the BUCKET cylinder on Cat 320D excavators. If you need the STICK (arm) cylinder kit or BOOM cylinder kit, search by your Cat part number — we carry those too.
Tip: Before disassembly, clean the outside of the cylinder thoroughly to prevent contamination. Inspect the rod surface for scoring — if the rod is scored, it will cut through new seals quickly. Light scoring can be buffed with 600-grit emery cloth, but deep grooves require rod repair or replacement.
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