SK300LC IV SK300 IV Hydraulic Boom Cylinder for Kobelco Excavator Spare Parts 22438U1177F4 2438U1177F2 Aftermarket High Quality

High-quality aftermarket LEFT HAND boom cylinder exclusively for Kobelco SK300LC-IV, SK300-IV crawler excavator, dual interchange OEM part numbers: 2438U1177F2,2438U1177F4, direct OEM replacement for original factory boom cylinder, controls boom lifting/lowering for heavy quarry mining, rock loading, large earthmoving and highway construction projects. Fully matched original dimension, pin pitch, oil port layout for plug-and-play installation without field machining modification.

1. Double PN Universal Fit: Two OEM numbers fully interchangeable, fits all production batches SK300-IV/SK300LC-IV left boom, matches original boom arm & hydraulic pipeline perfectly.
2. Heavy-Duty Reinforced Design: Thickened ear root and cylinder barrel, anti-crack & anti-deform under frequent heavy-load rock digging, customized for rugged mine working condition.
3. Full Pre-delivery Leakage Test: Each cylinder finishes full-stroke reciprocating cycling + tightness test to eliminate inner & outer oil leakage before delivery.
4. Cost-Effective Solution: Same working performance as genuine Kobelco original spare parts while saving 43%~52% purchase cost for global excavator parts dealers & repair shops.
5. Flexible Shipment: In-stock goods deliver within 3 working days; air freight 3~7 days for urgent orders, sea shipment 30~40 days for bulk wholesale.

Our factory specializes in Kobelco SK series hydraulic cylinders over 12 years, complete boom/arm/bucket cylinder range covering SK200, SK250, SK300, SK330, SK350 IV series, products mainly exported to Africa, Southeast Asia, Middle East aftermarket spare parts market.

Q1: Can this LH cylinder replace right-hand boom cylinder (PN:2438U1170F series)?
A: No, RH boom uses separate part number 2438U1170F1/F2/F3/F4 with different oil port layout, cannot cross installation.
Q2: Does standard package include matching seal kit?
A: Standard cylinder without seal set; matched repair seal kit 2438U1170R100 available with bundle discount when ordered together.
Q3: Export anti-rust packaging for long ocean transport?
A: Inner cylinder filled anti-rust hydraulic oil, piston rod coated anti-rust grease, wrapped waterproof PE film + solid export plywood case.
Q4: Discount for full set boom+arm+bucket cylinder bulk purchase?
A: Full set combined order enjoys tiered unit discount plus consolidated single shipment to cut total logistics expense.
Q5: Warranty support for abnormal oil leakage?
A: Provide on-site leakage photos + excavator serial number, we supply free replacement seal kit or remote installation guidance within warranty period.