Product Overview

This is a premium OEM replacement water pump designed for Yanmar 4D106, 4TNV106, and 4TNE106 series diesel engines. Engineered for optimal cooling system performance, this critical component is essential for maintaining proper engine operating temperature and preventing overheating. We supply this high-quality spare part globally to major industrial markets, supporting the maintenance of heavy machinery, generators, and marine applications.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications for a perfect fit and reliable performance, ensuring seamless integration with your Yanmar engine.
• Enhanced Durability: Constructed from high-grade materials to withstand the demanding conditions of industrial and marine use, offering extended service life and reduced downtime.
• Optimal Cooling Efficiency: Features an optimized impeller design for maximum coolant flow, promoting consistent engine temperature regulation and protecting against thermal stress.
• Robust Seal & Bearing Assembly: Equipped with a high-quality mechanical seal and premium bearings to prevent coolant leaks and ensure smooth, long-lasting operation.
• Direct Replacement: A direct bolt-on replacement for the original part, simplifying the repair process and minimizing installation time for technicians.

Technical Specifications

OEM Cross-Reference

Primary OEM Part Number: 123900-42000

This part is a direct replacement for the genuine Yanmar component. Always verify the part number stamped on your original pump for confirmation.

Compatibility

This water pump is specifically designed for Yanmar’s 4D106, 4TNV106, and 4TNE106 series diesel engines. These engines are commonly found in a wide range of industrial and commercial equipment, including:

• Generator Sets: Standby and prime power generators.
• Construction Equipment: Excavators, loaders, and compactors.
• Agricultural Machinery: Tractors and irrigation pumps.
• Marine Applications: Auxiliary engines and propulsion systems for workboats.
• Industrial Power Units: Various stationary power sources.

Global Supply & Distribution

We are a trusted global supplier of heavy-duty engine components with extensive export experience. Our logistics network ensures reliable and efficient shipping to key industrial regions worldwide.

• Worldwide Shipping: We ship to North America, Europe, Asia-Pacific, the Middle East, Africa, and South America.
• Major Port Delivery: Expedited delivery available to major international ports and industrial hubs, including Rotterdam, Los Angeles, Singapore, Dubai, and Hamburg.
• Trade Compliance: All shipments are handled with complete commercial documentation (Invoice, Packing List, Certificate of Origin) to ensure smooth customs clearance.
• B2B Focus: We specialize in bulk orders for distributors, workshops, and large-scale fleet operators.

Quality Assurance

Our commitment to quality ensures you receive a part you can depend on for critical engine performance.

• Manufacturing Standards: Produced in ISO-certified facilities using advanced manufacturing techniques and strict quality control protocols.
• Rigorous Testing: Each pump undergoes performance testing to verify flow rate, seal integrity, and bearing operation before shipment.
• Warranty: Backed by a standard warranty against manufacturing defects. Please contact us for specific warranty terms applicable to your region and order.
• Material Traceability: We use traceable, high-grade materials to ensure consistency and reliability in every part.

FAQ

Q: How can I confirm this water pump fits my specific Yanmar engine?
A: The most reliable method is to cross-reference the part number. This pump replaces OEM number 123900-42000. Please check the identification plate on your engine for the model (4D106, 4TNV106, or 4TNE106) and compare the part number on your existing water pump. You can also provide your engine’s serial number for our technical team to verify.

Q: Is the gasket or mounting hardware included with this water pump?
A: This listing is for the water pump assembly as shown. Installation gaskets and bolts are typically not included, as requirements can vary based on the specific engine configuration and the condition of existing hardware. We recommend using a new gasket kit and inspecting all fasteners during installation for optimal results.

Q: What are the signs that my Yanmar engine’s water pump needs replacement?
A: Common indicators include visible coolant leakage from the pump’s weep hole, unusual grinding or whining noises from the front of the engine, engine overheating, and excessive play or roughness when manually spinning the pump pulley. Regular inspection during routine maintenance is recommended to prevent unexpected failure.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship out products in 24 hours.

3.  Our packaging is standard export wooden box or others as your requirement.

4.  We will check the products before shipping, and give the pictures to our customers to confirm.

FAQ

Q1: Are you trading company or manufacturer ?
A: We are factory and trading company.

Q2: How long is your delivery time?
A: Generally it is 1-3 days if the goods are in stock. or it is 3-7 days if the goods are not in stock, it is according to quantity.

Q3: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

Q4: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.