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Product Details
Product Overview
This premium diesel engine water pump (Part Numbers: 400921-00532 / 400921-00532D) is specifically engineered for the Doosan DL06 engine platform, providing critical cooling system performance for heavy-duty excavators. Designed as a direct replacement for the OE water pump assembly, this component ensures optimal coolant circulation to prevent engine overheating and maintain peak operational efficiency. Our water pumps are manufactured to strict ISO standards and are ready for global export, serving major markets including North America, Europe, Southeast Asia, and the Middle East.
Key Features & Benefits
Precision Engineering: Cast iron housing and high-grade mechanical seal provide exceptional durability and leak-proof performance under high-temperature and high-pressure conditions.
Direct Fitment: Bolt-on replacement design matches OEM specifications exactly, eliminating the need for modifications or adapter plates.
Enhanced Cooling Flow: Optimized impeller design delivers consistent coolant volume to protect the engine block, cylinder head, and radiator from thermal stress.
Extended Service Life: Heavy-duty bearings and corrosion-resistant materials ensure long operational intervals, reducing downtime and maintenance costs for your fleet.
Rigorous Testing: Every unit undergoes pressure and flow rate testing to guarantee performance reliability before shipment.
Technical Specifications
Specification
Detail
Part Number
400921-00532 / 400921-00532D
Engine Model
Doosan DL06
Material
Cast Iron Housing / Steel Impeller
Seal Type
Mechanical Seal (Ceramic & Carbon)
Bearing Type
Dual Ball Bearing (Sealed)
Rotation
Clockwise (as viewed from pulley side)
Pulley Included
No (pulley must be transferred from original pump)
Gasket Included
Yes
OEM Cross-Reference
This water pump replaces the following original equipment manufacturer (OEM) numbers:
Doosan / Daewoo: 400921-00532, 400921-00532D
Alternative Part Numbers: DX12, DX12TI, DX12TIS (aftermarket series reference)
Compatibility
This part is compatible with the following excavator models and engine applications:
Application: Heavy construction, mining, and earthmoving equipment
Note: Always verify your existing part number and engine serial number to confirm fitment before purchase.
Global Supply & Distribution
We maintain a robust global logistics network to ensure fast and reliable delivery to our B2B partners worldwide:
Shipping Capabilities: Express (DHL, FedEx, UPS), Air Freight, and Sea Freight (FCL/LCL) options available.
Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), Asia-Pacific (South Korea, Japan, Australia), Middle East (UAE, Saudi Arabia), and Africa.
Fast Delivery: Stock items ship within 24-48 hours to major ports such as Los Angeles, Rotterdam, Busan, and Dubai.
Export Compliance: Experienced in international trade documentation, customs clearance support, and Incoterms (FOB, CIF, DDP).
Quality Assurance
Manufacturing Standards: Produced in ISO 9001:2015 certified facilities.
Testing: 100% factory tested for pressure integrity, flow rate, and rotational balance.
Warranty: 12-month warranty against manufacturing defects under normal operating conditions.
Certification: Parts meet or exceed OEM performance specifications.
FAQ
Q: Is this water pump a direct replacement for the original Doosan part 400921-00532? A: Yes, this pump is designed as a direct OEM replacement. It matches the physical dimensions, bolt pattern, and hose connections of the original Doosan part. You can install it without any modifications. Please ensure you transfer the pulley and fan clutch from your old pump, as these are not included.
Q: What are the common signs that my Doosan DL06 water pump needs replacement? A: Typical symptoms include coolant leaks from the weep hole (usually visible as a small drip or residue below the pump shaft), unusual bearing noise (a squealing or grinding sound from the front of the engine), engine overheating, or visible corrosion on the pump housing. If you notice low coolant levels without external leaks, also inspect the water pump seal.
Q: What maintenance is recommended after installing a new water pump? A: After installation, always use the correct Doosan-specified coolant mixture (typically 50/50 ethylene glycol and distilled water). Run the engine to operating temperature and check for leaks at the pump gasket and hose connections. Re-tighten the drive belt to the manufacturer’s tension specification. We recommend replacing the thermostat and radiator cap simultaneously for a complete cooling system overhaul.
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