Parker Loader Control Valve Seal & O-Ring Kit for Case 580C, 580D, 580SE

Fits Models At A Glance:

• Case Loader Backhoes: 580C, 580D, 580E, 580 Super E
• NOTE: Machines equipped with a Parker loader control valve

Kit Includes:

• Spool seals and O-rings in multiple sizes for every valve section
• Backup rings for the spring guide, center O-ring, and A25590 seal
• Relief/check body O-rings
• Spool wiper/scraper seals
• Rubber moisture seal
• Special sealing washers

Key Notes:

• Fits 2 or 3-Spool Valves
• Part Number: CS-580C-PLCV-K
• Weight: 0.50 lbs (0.23 kg)
• Kit Size: 23 part numbers, 65 pieces total
• Type: Complete reseal kit for the Parker loader control valve
• Important: For machines equipped with a Hydreco loader control valve instead, order CS-580C-HLCV — verify your valve manufacturer before ordering
• Application: Restores sealing throughout the Parker loader control valve, addressing spool leaks, backup ring wear, and worn wiper seals across all valve sections

Common Use Case or Symptoms:
Use when the loader control valve is leaking between sections, the boom or bucket function won't hold under load, or spool seals are visibly worn — a complete reseal restores proper valve sealing without replacing the entire valve body.

Why Choose Broken Tractor:

✅ Complete 65-Piece Kit — every seal and O-ring needed for a full valve reseal in one order, no piecemeal sourcing
✅ Correctly Matched to the Parker Valve — verify your valve type first, since Hydreco-equipped machines need a different kit (CS-580C-HLCV)
✅ Fast Shipping from a U.S.-Based Team — in-stock and ready to ship from our U.S. warehouses