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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.
Replacement Hydraulic Boom Cylinder for Kubota Excavator KX121-3 KX121-3ST KX121-3S OEM

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xPart Name | KX121-3 KX121-3ST KX121-3S Hydraulic Boom Cylinder For Kubota | Excavator Model | KX121-3 KX121-3ST KX121-3S |
---|---|---|---|
Application | For Kubota Excavator | Warranty | 12 Months |
Bore | 80mm | Stroke | 19.938″ |
Rod | 45mm | Closed | 31.14″ |
Highlight | Kubota KX121-3 Hydraulic Cylinder,Replacement Hydraulic Boom Cylinder,Hydraulic Boom Cylinder for Kubota |
Replacement Hydraulic Boom Cylinder for Kubota Excavator KX121-3 KX121-3ST KX121-3S OEM
Designed to replace OEM RD-118-67402, this boom cylinder fits Kubota KX121-3, KX121-3S, and KX121-3ST models. Engineered to OEM standards, it delivers reliable performance and durability for tough jobsite demands.
Specification
Product Name | Boom Hydraulic Cylinder Assy |
Excavator Model | KX121-3 KX121-3ST KX121-3S |
Apply to | fits for Kubota Excavator |
Warranty | 12 Months |
Stock | In Stock |
Why Trust Us?
We understand that choosing the right supplier online isn’t easy. That’s why we focus on what matters most:
1. Over 16 Years of Industry Experience
We've been manufacturing excavator hydraulic parts since 2008. Our expertise means less risk for you.
2. In-House Production, Full Control
From raw material to finished product — all under one roof. Quality is traceable and consistent.
3. Exported to 100+ Countries
Trusted by global customers in construction, mining, and agriculture industries.
4. Verified Quality Standards
ISO 9001:2015 certified. We test every cylinder before delivery.
5. Real Support, Real People
Our sales and technical team are ready to guide you — from selection to installation.