Ensure Optimal Engine Performance with a Quality Water Pump
Keeping your Komatsu engine cool is paramount for longevity and efficiency. The water pump is a critical component in your engine's cooling system, circulating coolant to dissipate heat and prevent overheating. A properly functioning water pump prevents costly damage and downtime, especially in demanding applications.
At Guangzhou Pinxin Engine Co., Ltd., we specialize in providing high-quality diesel engine parts. We understand the vital role each component plays in the performance and reliability of heavy machinery. Our focus is on delivering durable, precise-fit parts that meet or exceed OEM standards, ensuring your equipment operates smoothly in the toughest conditions.

Featured Product: Komatsu 6D125 / 6D125-5 PC400-5 Water Pump 6151-61-1101
We are proud to offer the Komatsu Water Pump part number 6151-61-1101, specifically designed for Komatsu 6D125 and 6D125-5 engines used in Komatsu PC400-5 excavators. This water pump is manufactured with precision and built from robust materials to withstand the rigors of heavy construction and mining environments.
Product Specifications & Parameters:
| Part Name: | Water Pump |
| Part Number: | 6151-61-1101 |
| Engine Model Compatibility: | Komatsu 6D125, Komatsu 6D125-5 |
| Machine Model Compatibility: | Komatsu PC400-5 Excavator |
| Material: | High-Quality, Durable Casting |
| Condition: | Brand New Aftermarket Replacement |
Key Advantages & Selling Points:
Perfect Fit: Engineered to be a direct replacement for Komatsu part number 6151-61-1101, ensuring easy installation and seamless integration with your 6D125/6D125-5 engine.
Optimal Cooling Efficiency: Designed to maintain proper coolant flow, preventing engine overheating and ensuring optimal operating temperature for the Komatsu PC400-5.
Built to Last: Constructed from high-quality materials resistant to corrosion and wear, providing long-term reliability and performance in demanding work environments.
Extends Engine Life: By maintaining stable engine temperature, this water pump helps reduce thermal stress on engine components, contributing to the extended lifespan of your Komatsu 6D125 engine.
Reliable Performance: Rigorously tested to meet quality standards, ensuring consistent and dependable performance in critical applications.
Applications and Machine Compatibility
This water pump (6151-61-1101) is primarily used in Komatsu PC400-5 Hydraulic Excavators powered by Komatsu 6D125 or 6D125-5 series diesel engines. The Komatsu PC400-5 is a heavy-duty machine commonly deployed in:
Large-Scale Construction Projects: Excavating foundations, moving large volumes of earth, site preparation.
Mining Operations: Loading haul trucks, overburden removal, material handling in quarries and mines.
Quarrying: Breaking and loading rock materials.
Heavy Infrastructure Development: Road building, bridge construction, utility installations requiring significant excavation.
In these demanding environments, the Komatsu 6D125 engine operates under high loads and temperatures. A malfunctioning water pump can quickly lead to overheating, potentially causing catastrophic engine failure and significant operational delays. Replacing a worn or failed 6151-61-1101 water pump with a high-quality replacement from Guangzhou Pinxin Engine Co., Ltd. is essential for maintaining the reliability and uptime of your Komatsu PC400-5 excavator.
About Guangzhou Pinxin Engine Co., Ltd.
Located in Guangzhou, China, Guangzhou Pinxin Engine Co., Ltd. is a leading supplier of premium aftermarket diesel engine spare parts. Our extensive product range includes essential components such as cylinder liners, pistons, engine blocks, crankshafts, injectors, and diesel pumps, covering a wide variety of engine makes and models, including Komatsu, Caterpillar, Cummins, and more. We are committed to providing reliable parts and exceptional customer service to keep your machinery running efficiently. Visit our website at https://www.caterpillar2013.com to explore our full catalog.
Frequently Asked Questions & Maintenance Tips
Q1: What are the common signs that my Komatsu 6D125 water pump might be failing?
A: Look out for signs such as engine overheating (indicated by the temperature gauge), coolant leaks around the water pump housing or weep hole, a grinding or whining noise coming from the pump area, or visible corrosion on the pump itself. If you notice any of these symptoms on your Komatsu PC400-5, it's advisable to inspect the water pump promptly.
Q2: How often should I check the water pump on my Komatsu PC400-5?
A: Regular inspection is key. It's good practice to visually inspect the water pump and surrounding components for leaks or corrosion during routine maintenance intervals, such as oil changes or coolant flushes. Pay attention to any unusual noises during engine operation. Consult your Komatsu PC400-5 service manual for recommended specific inspection schedules.
Q3: Is this 6151-61-1101 water pump a direct replacement for the original Komatsu part?
A: Yes, this water pump with part number 6151-61-1101 is engineered as a high-quality aftermarket direct replacement specifically for Komatsu 6D125 and 6D125-5 engines in Komatsu PC400-5 excavators. It is designed to match the form, fit, and function of the original part, ensuring a smooth replacement process.
Diesel Engine Parts Terminology (English | Chinese | Russian)
Cylinder Liner | 缸套 | Гильза цилиндра - Installed inside the engine block, forming the cylinder bore. Example: Caterpillar CAT 345D Cylinder Liner.
Piston | 活塞 | Поршень - Moves up and down inside the cylinder, driven by combustion. Example: Komatsu PC400-5 6D125 Piston.
Crankshaft | 曲轴 | Коленвал - Converts the linear motion of the pistons into rotational motion. Example: Cummins KTA19 Crankshaft.
Fuel Injector | 喷油器 | Топливная форсунка - Atomizes and injects fuel into the combustion chamber. Example: Bosch Common Rail Fuel Injector for excavators. (Using a general example as specific injector models vary widely).
Turbocharger | 涡轮增压器 | Турбонагнетатель - Uses exhaust gases to spin a turbine, compressing intake air. Example: Volvo EC460B Turbocharger.
Oil Pump | 机油泵 | Масляный насос - Circulates lubricating oil throughout the engine. Example: John Deere 4045 Oil Pump.
Radiator | 散热器 | Радиатор - Dissipates heat from the engine coolant to the air. Example: Hitachi EX200-5 Radiator.
Alternator | 发电机 | Генератор - Charges the battery and powers the electrical system. Example: Doosan DX300LCA Alternator.
Starter Motor | 启动马达 | Стартер - Used to crank the engine for starting. Example: Hyundai R220-7 Starter Motor.
Gasket Kit | 垫片组件 | Комплект прокладок - Seals various engine components to prevent leaks. Example: Yanmar 4TNV94L Gasket Kit.
Looking for this Komatsu 6D125 water pump 6151-61-1101 or other high-quality diesel engine parts? Guangzhou Pinxin Engine Co., Ltd. is your reliable source. We offer a wide selection of parts for various heavy equipment brands, ensuring you find exactly what you need to keep your operations running smoothly.