NH220 Water Pump 3945361 6676-63-1015 6685-61-1024 for Cummins Diesel Engine Excavator Parts

Product Details

Product Overview

This heavy-duty NH220 water pump, identified by OEM cross-reference numbers 3945361, 6676-63-1015, and 6685-61-1024, is a direct replacement cooling system component designed for Cummins diesel engines. Engineered to OEM size specifications, this water pump is essential for maintaining optimal engine operating temperatures in demanding industrial applications.

Commonly used in excavators, trucks, forklifts, bulldozers, buses, and loaders, this unit is manufactured to ensure reliable coolant circulation. The pump’s robust construction is intended to withstand the high thermal and mechanical stresses of continuous-duty diesel operations, providing a dependable solution for engine rebuilds and routine maintenance.

Key Features & Benefits

• Precision Fitment: Manufactured to strict OEM dimensions (OEM Size) to ensure direct bolt-on installation without modifications, reducing downtime.
• Durable Construction: Built with heavy-duty materials to resist corrosion and wear, ensuring a long service life in harsh working environments like construction sites and mines.
• Enhanced Cooling Efficiency: Designed to deliver consistent coolant flow, preventing engine overheating and protecting critical components like the cylinder head and gaskets.
• Rigorous Testing: Each unit undergoes machinery test reporting and video outgoing inspection to verify performance and seal integrity before shipment.
• Cost-Effective Solution: Offers the lowest price advantage in the market without compromising on quality, making it an economical choice for fleet maintenance.
• Versatile Application: Suitable for multiple vehicle types, including excavators, loaders, and trucks, simplifying inventory management for repair shops.

Technical Specifications

OEM Cross-Reference

This water pump is a direct replacement for the following original equipment manufacturer (OEM) part numbers. Verify your existing part number before ordering.

• Cummins OEM: 3945361
• Alternative OEM: 6676-63-1015
• Alternative OEM: 6685-61-1024

Compatibility

Engine Models: This water pump is specifically designed for the Cummins NH220 diesel engine series.

Common Applications: Based on standard industry fitment, this part is commonly used for the following machinery types (always verify physical fitment):

• Excavators
• Trucks
• Forklifts
• Bulldozers
• Buses
• Wheel Loaders

Global Supply & Distribution

We offer reliable worldwide shipping to meet the demands of international B2B buyers. Our strategic location in Guangdong and Guizhou, China, allows for efficient logistics to major global ports.

Major Markets Served:

• North America: Fast delivery to ports in Los Angeles, Houston, and New York.
• Europe: Regular shipments to Rotterdam, Hamburg, and Felixstowe.
• Asia-Pacific: Direct supply to Singapore, Dubai, and Australian industrial centers.
• Middle East & Africa: Serving markets in Saudi Arabia, UAE, and South Africa.

We have extensive export experience and ensure all shipments comply with international trade regulations. Bulk orders and customized shipping schedules are available for fleet operators and distributors.

Quality Assurance

Quality is paramount in our manufacturing process. This water pump is produced under strict quality control standards in ISO-certified facilities.

• Testing: Each unit is individually tested for pressure and flow performance. A Machinery Test Report is provided with every shipment.
• Inspection: We offer Video Outgoing Inspection to allow you to visually verify the product before it leaves our warehouse.
• Warranty: This product is backed by a 6-month warranty against manufacturing defects, providing peace of mind for your investment.

FAQ

Q1: How can I confirm this water pump fits my specific Cummins NH220 engine?
A: First, locate the casting number or part number on your old water pump. Compare it with our OEM cross-references: 3945361, 6676-63-1015, or 6685-61-1024. If the numbers match, it is a direct replacement. For engines installed in specialized equipment (e.g., specific excavator models), we recommend checking the physical dimensions (mounting bolt pattern and impeller depth) against your original part.

Q2: What maintenance steps should I take after installing this water pump?
A: After installation, always replace the coolant with the manufacturer-recommended mixture (typically 50/50 antifreeze and distilled water). Run the engine without the radiator cap to bleed air from the system. Inspect the fan belt tension and check for leaks at the pump gasket and weep hole. We recommend changing the thermostat simultaneously to ensure complete cooling system reliability.

Q3: Is this water pump suitable for high-altitude or extreme temperature operations?
A: Yes, the NH220 water pump is designed for robust diesel applications. However, for extreme conditions (e.g., above 40°C or below -20°C), we advise using a coolant with the appropriate boiling/freezing point range. The pump itself is mechanically capable of handling these stresses, but the overall cooling system (radiator, fan, and coolant mixture) must be properly maintained for optimal performance.