When your Komatsu bulldozer, loader, or dump truck starts showing signs of hydraulic failure, it’s often time to replace the pump. Choosing the right Komatsu pump replacement is critical to ensure your machine continues to operate smoothly, efficiently, and safely. With dozens of part numbers, models, and aftermarket options on the market, how do you make the right choice?
This guide will walk you through key steps to help you find the best Komatsu pump replacement, avoid common mistakes, and keep your equipment running like new.
1. Identify the Correct Part Number
The first step is always to confirm the original part number of your Komatsu hydraulic or gear pump. This number is typically found on the old pump’s nameplate or in the equipment’s service manual. For example, common bulldozer pump part numbers include:
- 705-56-36051
- 07448-66200
- 705-52-40110
Using the wrong part number can lead to performance issues or total pump failure, so accuracy is essential.
2. Know Your Machine Model and Application
Different Komatsu machines require different types of pumps—gear pumps, piston pumps, tandem pumps, and more. A D85 bulldozer might need a different pump than a WA380 loader or an HD465 dump truck.
When contacting suppliers, always provide:
- Machine model (e.g. D65EX, D155A)
- Year of manufacture (if available)
- Application type (bulldozer, loader, etc.)
This helps ensure compatibility and avoids costly returns.
3. Choose OEM or High-Quality Aftermarket
You generally have three options:
- Genuine Komatsu parts – High quality, but expensive and longer lead times.
- OEM equivalent pumps – Same specifications as the original but from trusted manufacturers.
- Low-grade aftermarket – Cheap, but often unreliable and with a short lifespan.
If you want OEM-level performance without the high price tag, OEM-quality pumps from reliable suppliers like ALMAX are an excellent option.
4. Check the Material and Build Quality
The quality of your replacement pump matters. Ask the supplier:
- What material is used in the gear and housing?
- Is the pump tested for pressure and flow before shipping?
- Do they provide any warranty?
At ALMAX, all pumps are pressure-tested before delivery, and components are made from high-grade forged steel and wear-resistant alloys.
5. Consider Delivery Time and After-Sales Service
Heavy equipment downtime is costly. That’s why it’s crucial to work with suppliers who offer:
- Fast production and shipping
- Flexible delivery terms (FOB, CIF, etc.)
- Responsive customer support
- Warranty options
A delayed shipment or poor communication can hurt your project timeline. Choose a supplier with strong logistics and international trade experience.
Why Choose ALMAX for Your Komatsu Pump Replacement?
At ALMAX, we specialize in Komatsu bulldozer gear pumps and hydraulic components, offering:
✅ OEM-quality performance
✅ Competitive factory-direct pricing
✅ Fast response and delivery times
✅ Trusted partnerships with 5 top-tier Chinese factories
✅ Support for over 300 Komatsu pump models
Whether you need a single pump or bulk orders, our team ensures every unit is tested and ready to install—backed by warranty and technical support.
Final Tips
- Always verify compatibility before purchase
- Compare pump specs if switching to an aftermarket model
- Don’t compromise on quality—hydraulics are critical to safety and performance
Looking for a reliable Komatsu pump supplier from China? Choose ALMAX — You deserve to be trusted.
Visit us at www.komatsupump.com or contact us at info@komatsupump.com for fast support and quotation.