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SK300LC IV SK300 IV Hydraulic Arm Cylinder for Hyundai Excavator Spare Parts 2438U1171F4 Aftermarket High Quality
Note: Wrong brand marked Hyundai originally, it fits Kobelco SK300IV/SK300LC-IV/SK330LC-IV excavator
High-quality aftermarket stick hydraulic cylinder for Kobelco SK300-IV, SK300LC-IV, SK330LC-IV heavy excavator, interchange OEM part numbers: 2438U1171F2 / 2438U1171F4, direct replacement original arm cylinder to control stick extension & retraction for mining, rock digging, bulk earthmoving projects. Fully consistent with original dimension, pin pitch and oil port for direct bolt-on installation without modification.
| Item | Details |
|---|---|
| Product Name | Hydraulic Arm / Stick Cylinder |
| Fit Model | Kobelco SK300 IV, SK300LC IV, SK330LC IV |
| OEM PN | 2438U1171F4, 2438U1171F2 |
| Grade | New High-Grade Aftermarket |
| Warranty | 12 months for manufacturing defects |
| MOQ | 1pc in stock |
| QC Standard | ISO9001 certified, full pressure leakage test |
| Spec Item | Data |
|---|---|
| Bore Diameter | 170mm |
| Piston Rod Diameter | 120mm |
| Rated Working Pressure | 34.3MPa |
| Factory Test Pressure | 51.45MPa (1.5×nominal pressure) |
| Barrel | ST52 seamless steel, precision inner honing processing |
| Piston Rod | 40Cr quenched & tempered, 28~32μm hard chrome plating, HRC67~70 anti-abrasion |
| Matching Seal Kit PN | 2438U1171R200 / 2438U1171R300 |
| Working Temp | -25℃ ~ +85℃ |
| Structure | Double ear mounting with copper wear bushings, built-in end buffer device |
- Universal OEM interchange: Two part numbers cross-fit all production batches of SK300/SK330 IV series arm cylinder, compatible with original arm linkage and hydraulic pipeline.
- Heavy-duty reinforced design: Thickened lug root avoids crack under frequent heavy-load rock excavation, suitable for mine & harsh construction site.
- Strict pre-ship inspection: Full-stroke reciprocating cycling + high-pressure tightness test to eliminate inner & outer oil leakage before delivery.
- Cost-saving option: Same performance as genuine Kobelco spare parts while cutting 42%~50% procurement cost for global repair shops & parts wholesalers.
- Flexible delivery: In-stock goods ship within 3 working days; air freight 3~7 days for urgent order, sea shipment 30~40 days for bulk purchase.
Factory specialized in Kobelco SK series hydraulic cylinders over 12 years, full boom/arm/bucket cylinder range covering SK200~SK350 IV series, products mainly exported to Africa, Southeast Asia, Middle East aftermarket market.
Q1: Can it fit SK300-III model?
A: Part number shares same dimension for partial SK300-III, confirm machine serial number before order.
Q2: Standard package includes seal kit?
A: Standard cylinder without seal set; matched repair kit PN2438U1171R200 available separately with bundle discount.
Q3: Export anti-rust packing?
A: Barrel filled anti-rust oil, piston rod coated anti-rust grease, wrapped PE film + solid export plywood case for long ocean transit.
Q4: Discount for full set boom+arm+bucket cylinder order?
A: Combined full-set purchase gets tiered discount plus consolidated shipment to save total freight cost.
Q5: After-sales for leakage within warranty?
A: Provide leakage photos + excavator serial number, free replacement seal kit or remote installation guidance offered.
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