Product Introduction

• Structure: A cast-iron housing with an integrated impeller, mechanical seal, and bearing assembly. The pump is designed for direct mounting to the engine block, with a pulley-driven mechanism for power transmission.

• Performance: Delivers a high-volume, pressure-stable flow of coolant to efficiently transfer heat from the engine block and cylinder head to the radiator. The mechanical seal prevents coolant leaks, ensuring reliable operation in high-temperature, high-vibration environments.

• Design: Directly interchangeable with original equipment pumps, ensuring a perfect fit with the engine’s cooling system and belt drive.

Core Function

1. Coolant Circulation: Drives the flow of engine coolant through the engine block, cylinder head, and radiator, ensuring consistent heat dissipation to prevent overheating.

2. Pressure Maintenance: Maintains system pressure to raise the boiling point of coolant, allowing it to absorb more heat before vaporizing.

3. Sealing & Durability: The mechanical seal and robust cast-iron construction resist wear, corrosion, and leaks, extending service life and reducing maintenance.

Cooling Water Pump 1000873618 WEICHAI – OEM-Grade Performance for Heavy-Duty Engines

When your WEICHAI engine demands consistent thermal regulation under extreme loads, the Cooling Water Pump 1000873618 delivers uncompromising coolant circulation precisely where it counts. Engineered to meet original factory specifications, this water pump keeps operating temperatures stable across long hauls, mining operations, and high-torque applications — protecting your engine investment mile after mile.

METTLEAD Truck Parts supplies this genuine-quality cooling water pump at factory-direct pricing from China, eliminating middlemen so procurement managers like you secure the right part at the right cost, on time.

Key Features and Buyer Benefits

Precision-Engineered Coolant Circulation

The 1000873618 water pump employs a high-efficiency impeller design that maintains optimal coolant flow rates even at elevated RPMs. This translates directly into reduced hot-spot formation and extended engine block lifespan for your fleet.

OEM-Matching Dimensional Accuracy

Every mounting hole, shaft diameter, and flange surface replicates the original WEICHAI blueprint. That means bolt-on installation with zero modification — saving your workshop hours and eliminating fitment risk.

Heavy-Duty Seal and Bearing System

A ceramic-carbon mechanical seal paired with a pre-lubricated double-row bearing resists coolant leakage and shaft play. This combination extends service intervals and dramatically cuts unplanned downtime costs.

Corrosion-Resistant Construction

The cast-iron housing and stainless-steel impeller shaft withstand aggressive coolant chemistries and thermal cycling, ensuring reliable performance across 80,000–120,000 km service intervals under normal operating conditions.

Direct Cost Savings for Procurement Teams

• Factory-direct pricing — no distributor markups
• Bulk order flexibility — scalable quantities for fleet operators
• Reduced lead times — ready stock with rapid dispatch
• Strict quality control — every unit pressure-tested before shipment

Technical Specifications

Application Scenarios — Where This Water Pump Performs

The Cooling Water Pump 1000873618 is designed to serve WEICHAI-powered vehicles and machinery operating in the most demanding conditions:

• SINOTRUK HOWO A7 / T7H Tractor Trucks — Long-distance highway logistics requiring continuous thermal stability over 1,000+ km hauls.
• SHACMAN X3000 / F3000 Heavy-Duty Trucks — Construction-site and mining-route operations where dust, vibration, and heat cycling stress cooling systems.
• SINOTRUK SITRAK C7H — Premium heavy haulers demanding precision cooling for fuel-efficient WP13 engines.
• FOTON Auman EST-A — Mixed urban-highway distribution fleets needing reliable thermal management across stop-start and cruise conditions.
• Stationary Power / Generator Sets — WEICHAI WP-series industrial engines powering mining sites, oil fields, and construction base camps.

Whether your trucks navigate tropical heat in Southeast Asia, high-altitude routes in South America, or dust-laden roads across Africa, this water pump maintains its designed flow rate and seal integrity across every climate zone.

OEM / ODM Capabilities

White-Label and Custom Packaging

METTLEAD supports distributors and resellers with flexible branding solutions. You can receive this cooling water pump in:

• Neutral packaging — unbranded boxes ready for your own labels
• Custom-branded packaging — your logo, part numbers, and design printed on the box
• METTLEAD original packaging — our branded quality-assurance packaging

Quality Control Process

1. Incoming raw material inspection (material composition and hardness testing)
2. CNC machining dimensional verification (CMM measurement)
3. Dynamic balance testing of impeller assembly
4. 100% hydrostatic pressure and leak test
5. Final visual inspection and protective packaging

Every Cooling Water Pump 1000873618 leaving our facility has passed all five checkpoints — so you can trust what arrives at your warehouse.

Frequently Asked Questions

Is the 1000873618 water pump a direct replacement for my original WEICHAI part?

Yes. This cooling water pump matches the OEM dimensional specifications and flow performance of the original WEICHAI 1000873618 part. It installs directly onto WP10, WP12, and WP13 engine blocks without any adapter plates or modifications.

What are the common symptoms that indicate this water pump needs replacement?

Look for coolant weeping from the weep hole beneath the pump body, unusual bearing noise (grinding or whining at idle), visible shaft play when the belt is removed, or persistent engine overheating despite a functional thermostat and radiator. Any of these signals warrant immediate replacement to prevent cascading engine damage.

How does the impeller material affect performance and longevity?

The cast-iron impeller maintains consistent blade geometry over time, resisting erosion from coolant flow cavitation. Unlike stamped-steel alternatives that can corrode and thin out, this design preserves rated flow output throughout the pump’s service life.

Can I use this water pump with extended-life coolants (OAT / HOAT)?

Absolutely. The ceramic-carbon seal and corrosion-resistant housing materials are fully compatible with both conventional silicate-based coolants and modern OAT/HOAT formulations. Always maintain the coolant concentration recommended by WEICHAI (typically 40–60% antifreeze).

What is the recommended replacement interval for this cooling water pump?

Under standard operating conditions, we recommend inspecting the pump at 80,000 km and replacing it by 120,000 km or sooner if any leak or bearing noise appears. Severe-duty applications (mining, frequent overloading) may require earlier replacement around 60,000–80,000 km.

Do you supply the gasket and O-ring seals with this water pump?

Yes. Each unit ships with the necessary mounting gasket and O-ring seals for a complete installation. No separate gasket kit purchase is required.

Ready to Secure Your Cooling Water Pump 1000873618?

Your engines cannot afford cooling system failure — and your budget cannot afford inflated distributor pricing. METTLEAD bridges that gap with genuine-quality WEICHAI parts, strict quality verification, and logistics built for international B2B buyers.

Get your competitive quote today:

• Tell us your required quantity and delivery destination
• Receive a detailed quotation within 24 hours
• Enjoy flexible payment terms and secure transaction methods

👉 Contact Us Now to Request a Quote

Browse our full range of WEICHAI engine components — water pumps, oil pumps, fuel injectors, turbochargers, and more — in our WEICHAI Engine Parts Catalog.

METTLEAD Truck Parts — Your trusted China-direct source for SINOTRUK, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON truck parts worldwide.