Hdparts D1146 Water Pump Assembly 65.06500-6138 / 6138C for Doosan DH300-5 Excavator Engine

Product Details

Product Overview

This Hdparts D1146 Water Pump Assembly is a high-precision cooling system component engineered specifically for the Doosan DH300-5 excavator. Designed to meet or exceed OEM specifications, this water pump ensures optimal coolant circulation to maintain engine temperature under heavy-duty operating conditions. Hdparts offers global shipping to major industrial markets including North America, Europe, Southeast Asia, the Middle East, and Australia, providing reliable aftermarket solutions for construction and mining equipment fleets.

Key Features & Benefits

• Precision Engineering: Manufactured to strict tolerances using high-grade cast iron and steel for long service life in harsh environments.
• Direct OEM Replacement: Exact fitment for Doosan DH300-5 models, eliminating the need for modifications during installation.
• Enhanced Durability: Features a heavy-duty bearing and seal system designed to withstand high rotational speeds and thermal stress.
• Corrosion Resistance: Specially treated impeller and housing resist rust and scale buildup, ensuring consistent flow performance.
• Cost-Effective Solution: Provides reliable performance at a competitive price point compared to genuine OEM parts, reducing maintenance budgets.

Technical Specifications

OEM Cross-Reference

This water pump is a direct aftermarket replacement for the following OEM part numbers:

• Doosan: 65.06500-6138
• Doosan: 65.06500-6138C

Note: Always verify your existing part number against the list to ensure compatibility. The ‘C’ suffix variant denotes a minor design revision compatible with later production DH300-5 units.

Compatibility

• Engine: Doosan D1146 Diesel Engine
• Excavator Models: Doosan DH300-5 (All sub-variants)
• Application: Heavy construction, mining, quarry, and earthmoving equipment

Global Supply & Distribution

Hdparts maintains a robust global logistics network to serve B2B clients worldwide. We provide fast and reliable shipping to major ports and industrial hubs, including:

• North America: Los Angeles, Houston, New York, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Singapore, Shanghai, Busan, Sydney
• Middle East & Africa: Dubai, Jeddah, Durban

With extensive export experience and compliance with international trade regulations, we ensure secure packaging and on-time delivery for wholesale orders, container loads, and drop-shipments.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities with rigorous quality control processes.
• Testing: Each water pump undergoes pressure, flow rate, and rotational balance testing before shipment.
• Warranty: Backed by a 12-month warranty against manufacturing defects, providing peace of mind for fleet operators.

FAQ

Q: Will this water pump fit my Doosan DH300-5 with a D1146 engine?
A: Yes, this assembly is specifically designed for the D1146 engine used in the Doosan DH300-5. It replaces OEM numbers 65.06500-6138 and 65.06500-6138C. We recommend checking your original part number to confirm the revision level before ordering.

Q: What is the recommended installation procedure?
A: Installation requires draining the coolant, removing the fan belt and old pump, cleaning the mating surface, and installing the new unit with a new gasket. Always torque bolts to manufacturer specifications and refill with the correct coolant mixture. We advise replacing the thermostat simultaneously for optimal system performance.

Q: How do I maintain this water pump for maximum lifespan?
A: Use a high-quality, phosphate-free coolant to prevent internal corrosion. Regularly inspect the drive belt for proper tension. Check for leaks at the pump weep hole, which indicates seal wear. Follow the excavator’s service manual for periodic coolant changes to prevent sediment buildup that can damage the impeller.