Seal
| Machine | Model | Years / S/N |
|---|---|---|
| Excavator | CX60D | — |
| Excavator | CX75E | — |
| Excavator | CX70E | — |
| Excavator | CX65D | — |
| Excavator | E70D | — |
| Excavator | E75D | — |
| Excavator | E60D | — |
OEM Seal Arm Cylinder #B312999203 - OEM Pump, Valve, or Cylinder Repair Part for Case Construction Equipment Use this OEM service part when equipment repair involves repair of pumps, valves, or cylinders with poor actuation or oil bypass, especially where poor actuation, oil bypass, slow movement, and unreliable hydraulic control has become a concern. A practical OEM option for OEM hydraulic valve replacement, pump repair, cylinder service, and pressure-control maintenance jobs in the field.
More Details
Part Number: B312999203
Application: Primary service use: OEM pump, valve, or cylinder service part for restoring hydraulic control and dependable machine movement during repair work.
Key Features:
- OEM replacement for worn hydraulic components with leakage or pressure-control issues
- Helps restore reliable actuation, hydraulic response, and oil-flow control
- Direct-fit service part for heavy equipment repair and maintenance work
Fits Case Models: Compatible with various Case construction equipment models - verify fitment before ordering
Replaces: Refer to manufacturer cross-reference if applicable
- Manufacturer part number
- B312999203
- Internal SKU
- IC:B312999203
- Brand
- CASE CONSTRUCTION
- Condition
- OEM, new
- Category
- Case Construction
- Weight
- 0.24 lb
Free pickup at any of our 17 branches across Ohio, Indiana, Michigan, and Kentucky. Select your preferred branch at checkout.
30-day no-fault returns. Bought the wrong part? Send it back for a full refund — no restocking fees, no minimums.