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Overview
When your excavator’s hydraulic pump fails, choosing the right replacement matters. Genuine Caterpillar hydraulic pumps are engineered specifically for Cat machines, offering predictable performance and manufacturer support. Aftermarket pumps can be less expensive but vary widely in quality. Kyotechs, established in 2009, supplies a wide range of parts for major excavator brands and provides one-stop repair solutions to help you make the right choice.
Key Differences: Genuine Caterpillar vs Aftermarket
Performance
Genuine Caterpillar pumps are built to meet Cat’s specifications, ensuring consistent flow, pressure, and responsiveness. Aftermarket pumps may match these specs on some models, but performance can vary between manufacturers. If machine efficiency and predictable operation are top priorities, genuine pumps generally offer the safest bet.
Durability and Reliability
Original pumps often use higher-grade materials and tighter tolerances, which can translate to longer service life and lower risk of unexpected failure. Aftermarket options range from budget to High Quality; high-quality aftermarket units can approach OEM reliability but require careful supplier selection.
Warranty and Support
Genuine Caterpillar parts usually come with manufacturer warranties and access to dealer support. Aftermarket parts carry warranties set by their makers—terms differ widely. Kyotechs provides clear warranty options and professional installation guidance for both OEM-equivalent and aftermarket parts.
Cost and Value
Aftermarket pumps are typically less expensive upfront. However, potential savings must be weighed against lifespan, downtime costs, and repair frequency. Genuine pumps may cost more initially but can reduce long-term total cost of ownership in many applications.
Fit and Compatibility
Genuine pumps guarantee fit and integration with Cat systems. Some aftermarket pumps require minor adjustments or additional parts. Kyotechs confirms compatibility and offers remanufacturing or calibration services to ensure proper fit.
Why Choose Kyotechs
One-Stop Repair and Parts Solutions
Kyotechs has served the excavator industry since 2009, supplying parts for Hitachi, Sany, Kawasaki, Volvo, Hyundai, Doosan, Komatsu, Caterpillar and more. We offer engine, hydraulic, valve, cylinder, cabin and undercarriage parts plus full repair services. Our team helps you evaluate OEM vs aftermarket and delivers installation, testing, and warranty support.
Bottom Line
If reliability, exact fit and manufacturer support are essential, genuine Caterpillar hydraulic pumps are the preferred choice. If budget is tight, select high-quality aftermarket options from trusted suppliers. Kyotechs can guide your decision and provide the parts and repair services to keep your excavator productive and reliable.
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Our Advantages
Diverse Brand Specialization
We cater to a wide range of renowned brands such as Caterpillar, Cummins, Hyundai, Doosan, Hitachi, JCB, CASE Construction, CNH, Kobelco, Komatsu, and Volvo, showcasing our comprehensive understanding of the industry.
Expertise In Engine Components
Focusing on engine components adds a layer of specialization, making us a go-to source for clients seeking high-quality parts specifically for engines.
One-Stop Excavator Software Solution
Kyotechs offer a comprehensive "One-Stop Excavator Software Solution" designed to solve engine ECU, excavator controller, and monitor software issues.
Global Reach
Engaging in global accessory supply positions us as a global player, allowing customers from different parts of the world to access our specialized services and products.
Our Certifications
SANY Power
Tongmyung
MITSUBISHI FUSO
Question you may concern
What are the reasons for the excavator engine to emit black smoke?
- 1. Insufficient air intake: Check whether the intake valve clearance is within a reasonable range. Unequal valve clearance will cause insufficient intake pressure and volume; whether the air filter is clogged. The supercharger is damaged, resulting in insufficient intake pressure;
2. The diesel quality is poor, and the diesel pump and fuel injector are worn;
3. Injector wear: Excessive fuel injection leads to incomplete combustion. Service personnel are required to perform an engine cylinder disconnection experiment to check whether it is caused by wear of the fuel injector.
Is Kyotechs on social media?
Kyotechs is an active participant in social media channels. Facebook, whatsup, Twitter, Instagram, YouTube and LinkedIn are powerful tools that allow us to connect with customers, investors, potential employees and fans.
What are the reasons that may cause the excavator engine to emit blue smoke?
Blue smoke when starting a cold car: It is normal for a cold car to emit blue smoke and disappear after the car is heated, because a small amount of oil will invade the engine combustion chamber after the shutdown. Continuous blue smoke after starting:
1. The diesel filter is clogged, check whether the oil type is correct;
2. The engine piston ring and valve oil seal are worn, affecting the oil in the intake or exhaust pipe, which causes the excavator to emit blue smoke;
3. The clearance between the piston and the cylinder liner is too large, causing blue smoke;
What are the reasons that may cause the excavator engine to emit white smoke?
1. Most of the white smoke is caused by water in the cylinder. Please check whether there is water in the excavator diesel. Generally, the white smoke is emitted for a short time after starting, and there is no problem with the engine;
2. If the excavator starts to emit white smoke, the oil is not reduced, and the excavator works weakly, it means that the cylinder mattress of the excavator engine is worn;
3. Poor atomization of the injector and low cylinder pressure are also one of the reasons for the excavator engine to emit white smoke. Check the injector.

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To be a happy enterprise in the field of engineering equipment.
Kyotechs delivers efficient and reliable service at each stage to meet the customer's needs.
Contact
Contact: Ally Fan
Email: kyotechs@kyotechs.com
Tel: +86 020 - 82313009
Skype: allyfan333
Mobile / Whatsapp / Wechat:
+86 - 18826315313
Address: 268 Zhongshan Avenue East, Guangzhou, Guangdong, China.
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