Product Overview

This is a genuine replacement water pump designed specifically for Doosan heavy machinery diesel engines. Engineered for reliability and performance, this part is essential for maintaining optimal engine cooling and preventing overheating in demanding industrial applications. We specialize in the global supply of OEM-quality engine components, serving major markets across North America, Europe, Asia-Pacific, and the Middle East with efficient logistics and export compliance.

Key Features & Benefits

• OEM-Spec Quality: Manufactured to meet or exceed original Doosan specifications for a perfect fit and reliable operation.
• Enhanced Durability: Constructed with high-grade materials and precision bearings to withstand the high-stress environment of diesel engines.
• Optimal Cooling Performance: Ensures efficient coolant circulation to maintain stable engine temperatures, reducing the risk of costly overheating damage.
• Direct Replacement: Designed as a direct bolt-on replacement, minimizing downtime during installation.
• Extended Service Life: Robust construction contributes to longer intervals between maintenance and part replacement.

Technical Specifications

OEM Cross-Reference

Primary OEM Part Number: 400921-00021

This part is a direct replacement for the original Doosan component. Always verify the part number stamped on your original unit for confirmation.

Compatibility

This water pump is compatible with a range of Doosan diesel engines powering various models of loaders and excavators. It is crucial to verify your engine model and serial number to ensure correct application. Typically fits engines used in:

• Doosan Loaders (e.g., DL Series)
• Doosan Excavators (e.g., DX Series)

For precise fitment, please consult your equipment’s service manual or contact our technical support with your machine model and engine serial number.

Global Supply & Distribution

We are a leading supplier in the global heavy equipment parts network. Our logistics infrastructure ensures reliable worldwide shipping to key industrial regions:

• Major Markets Served: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, Middle East, and Africa.
• Efficient Logistics: We ship via air and sea freight to all major international ports and industrial hubs, offering competitive FOB/CIF terms.
• Export Expertise: All documentation is handled professionally for smooth customs clearance, compliant with international trade regulations.
• Stock Availability: Maintained in regional warehouses to facilitate faster delivery to end-users and distributors.

Quality Assurance

Every part in our catalog is sourced from certified manufacturers committed to quality.

• Manufacturing Standards: Produced under strict quality control systems (ISO-certified where applicable).
• Rigorous Testing: Components undergo performance and durability testing to ensure they meet operational demands.
• Warranty: Backed by a standard warranty against manufacturing defects. Please contact us for specific warranty terms applicable to your region.
• Inspection: Available upon request for B2B buyers and large-quantity orders.

FAQ

Q1: How can I confirm this water pump fits my specific Doosan machine?
A1: The most reliable method is to cross-reference the part number. Locate the part number (400921-00021 or equivalent) on your original, failed water pump. You can also provide our technical team with your machine’s model number and engine serial number for verification.

Q2: Is this a complete assembly, or does it require additional components for installation?
A2: This part is typically supplied as a complete, ready-to-install water pump assembly, including the impeller, housing, and bearing shaft. It may not include the gasket or pulley; please check the product images or description details, and consult your service manual for a full list of required installation items.

Q3: What are the signs that my Doosan engine’s water pump needs replacement?
A3: Common failure indicators include coolant leakage from the pump’s weep hole, unusual grinding or whining noises from the front of the engine, engine overheating, and visible play or wobble in the pump pulley. Addressing these signs promptly can prevent severe engine damage.

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 products in 2 days.

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

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .