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Excavator Hydraulic Cylinder
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Arm Cylinder
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Boom Cylinder
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Bucket Cylinder
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Excavator Spare Parts
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Excavator Hydraulic Pump
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Excavator Gear Pump
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Excavator Valve
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Travel Motor Assy
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Swing Motor Assy
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Excavator Electrical Parts
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Excavator Swing Ring
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Excavator Undercarriage Parts
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Excavator Engine
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Excavator Tools
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DavidWe’ve been working with GLPARTS for our excavator hydraulic needs, and their customer service has been fantastic. The quality of the cylinders is top-notch, and they match perfectly with our Volvo and Hyundai excavators. Fast shipping, excellent fit, and reliable performance!
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JohnWe’ve been using GLPARTS' hydraulic cylinders for our excavators for over a year now, and we couldn't be happier. The quality is excellent, the fitment is perfect, and delivery times are always faster than expected. Highly recommend their products for any heavy equipment needs!
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MariaThank you to GLPARTS for their fast and reliable service. The hydraulic cylinders we purchased fit our JCB excavators perfectly, and we’ve seen a noticeable improvement in efficiency. The cylinders are made of high-quality materials, and they’ve been holding up well under tough conditions.
Hyundai R300 Excavator 31N6-66101 31N8-50138 Bucket Arm Hydraulic Cylinder Assy

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xPart Name | Excavator R300 Hydraulic Cylinder | Excavator Model | R300 |
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Part PN | 31N6-66101 31N8-50138 | Warranty Policy | 12 Months |
Technical Support | Installation Instructions | Stock | In Stock |
Service | OEM & ODM | Response Speed | Reply Within 12 Hours At The Latest |
Hyundai R300 Excavator 31N6-66101 31N8-50138 Bucket Arm Hydraulic Cylinder Assy
Part Name | Excavator R300 Bucket Arm Cylinder |
Machine Model | R300 |
Part Number | 31N6-66101 31N8-50138 |
Apply to | Fits for Hyudai Excavator |
Guarantee | 1 Year |
Quality | OEM Quality |
Brand | Glparts |
Why Choose Guangzhou Guoli Engineering Machinery Co., Ltd.
1. Automated Welding Process
Fully automatic welding eliminates weak spots and cracks, ensuring uniform strength and clean, stable weld seams.
2. Premium Imported Seals
We use top-tier sealing brands like NOK and SKF for superior leak protection, longer service life, and smooth operation.
3. Perfect Model Matching
With deep knowledge of various excavator models, we tailor each cylinder to ensure precise fit and optimal compatibility.