The engine cooling system relies on a powerful, dependable water pump to maintain optimal operating temperatures and prevent overheating. The 1000402861 Water Pump from HOWO is engineered to deliver exceptional coolant flow, robust construction, and a perfect factory fit, ensuring that your engine stays cool and performs reliably even under the most demanding conditions. As a vital Howo/Sitrak truck parts component, this water pump is manufactured from high‑grade materials with a precision‑machined impeller, heavy‑duty bearings, and a durable seal that guarantees leak‑free operation and long service life. Whether you are replacing a worn pump or performing a full cooling system overhaul, the 1000402861 delivers factory‑spec flow rates, superior heat dissipation, and lasting reliability – making it the trusted choice for professional workshops and fleet operators worldwide.
The water pump is the heart of your engine’s cooling system, responsible for circulating coolant through the block, cylinder head, radiator, and heater core. The 1000402861 is specifically designed to provide consistent, high‑volume coolant flow that efficiently transfers heat away from critical engine components. A failing water pump can lead to overheating, reduced engine performance, and costly repairs. HOWO has engineered this pump with a precision‑cast housing, a dynamically balanced impeller, and a premium bearing assembly that ensures smooth, quiet operation and extended service life. The mechanical seal is made from high‑quality ceramic and carbon materials, providing a leak‑tight barrier that withstands the aggressive antifreeze solutions and temperature extremes. With the 1000402861, you ensure that your engine maintains the optimal temperature range, protecting against thermal stress and maximizing longevity.
High Flow
Efficient Cooling
Heavy‑Duty
Durable Bearings
OEM Fit
Exact Replacement
Temperature Control
Consistent
The 1000402861 water pump is manufactured to the highest OEM standards, incorporating advanced materials and precision engineering. Below are the complete technical specifications for this essential cooling system component.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 1000402861 | Exact Match |
| Part Name | Water Pump | Genuine HOWO |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / MC11/MC13 | Engine cooling system |
| Housing Material | High‑strength aluminium alloy | Corrosion‑resistant |
| Impeller Type | Closed‑face, high‑efficiency | Precision‑cast |
| Bearing Type | Double row, sealed | Grease‑packed |
| Mechanical Seal | Ceramic / carbon (graphite) | Leak‑proof |
| Drive Type | Serpentine belt (8‑rib) | Direct mount |
| Max Flow Rate | 250 L/min | At rated speed |
| Max Operating Pressure | 1.5 bar (21.7 psi) | Coolant system |
| Weight | 2.1 kg | Complete assembly |
| Warranty | 12 Months | Manufacturer Guarantee |
The 1000402861 water pump is built using advanced manufacturing techniques, including precision casting, CNC machining, and dynamic balancing. The impeller is carefully designed to provide optimal coolant flow while minimizing cavitation and turbulence, ensuring efficient heat transfer and quiet operation. The pump housing features integral mounting bosses and a precision‑machined sealing surface that guarantees a perfect fit with the engine block and prevents coolant leaks. The heavy‑duty bearing assembly is pre‑lubricated and sealed for life, eliminating the need for regular maintenance and ensuring long‑term reliability. The mechanical seal is constructed from high‑quality ceramic and carbon, providing a durable, wear‑resistant barrier that withstands the harsh conditions of the cooling system. Each pump is factory‑tested for flow rate, pressure, and leak integrity, guaranteeing that the 1000402861 meets HOWO’s rigorous quality standards. This engineering excellence translates into a water pump that delivers reliable, consistent cooling performance, keeping your engine operating at the optimal temperature for maximum power and efficiency.
The 1000402861 water pump is specifically designed for HOWO heavy‑duty trucks equipped with MC11 or MC13 engines, including T7H, A7, and derivative models. It directly replaces the original water pump with identical mounting points, pulley alignment, and hose connections, ensuring a straightforward bolt‑on installation without modifications. The pump is compatible with all factory‑specified cooling system components, including the radiator, thermostat, and hoses. This water pump is also compatible with many Sinotruk and other commercial vehicles that share the same engine cooling architecture. To confirm fitment, always cross‑reference the OEM number on your existing pump with 1000402861. If they match, this component will integrate seamlessly. Keeping this pump in your spare parts inventory enables rapid cooling system repairs, minimising downtime and protecting your engine from overheating.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
MC11/MC13
Engine Series
Direct Replacement
No Modifications
Replacing a worn or failing water pump with the 1000402861 immediately restores the cooling system’s ability to maintain optimal engine temperatures. The high‑flow impeller ensures that coolant circulates efficiently through the engine block, cylinder head, and radiator, effectively dissipating heat even under heavy loads and extreme ambient conditions. The reduced internal friction and precise balance of the pump also contribute to quieter operation and lower parasitic drag on the engine, which can improve fuel efficiency slightly. The robust mechanical seal prevents coolant leaks, eliminating the risk of low coolant levels and potential overheating. For fleet operators, a reliable water pump reduces the risk of cooling‑related breakdowns, extends the service life of the engine, and lowers overall maintenance costs. By investing in the 1000402861, you ensure that your HOWO truck stays cool, reliable, and ready for the road ahead.
Installing the 1000402861 water pump requires careful attention to detail. Begin by safely supporting the vehicle and draining the coolant from the radiator and engine block. Remove the accessory belt and any components that obstruct access to the water pump. Detach the hoses and unbolt the old pump, taking care not to damage the mating surface on the engine block. Clean the mounting surface thoroughly and apply a thin layer of gasket sealant or install a new O‑ring if required. Install the new pump, ensuring that the alignment dowels are properly engaged, and torque the mounting bolts to the manufacturer’s specification (typically 25–30 Nm). Reconnect the hoses, install a new belt, and refill the cooling system with the recommended coolant mixture. Run the engine to operating temperature, check for leaks, and bleed any trapped air from the system. Periodically inspect the pump for signs of leakage or noise, and replace the coolant at the recommended intervals. With proper installation and regular maintenance, the 1000402861 will provide years of reliable cooling performance.
Pro Tip: When replacing the water pump, it is advisable to also replace the thermostat and inspect the radiator hoses for wear. A complete cooling system overhaul ensures that all components work together optimally. The 1000402861 is designed to work with OEM‑spec thermostats and hoses; using genuine parts will prolong the life of your new pump.
Genuine HOWO components are engineered to the highest standards, and the 1000402861 water pump is no exception. Aftermarket pumps often use inferior materials, less efficient impeller designs, or lower‑grade bearings and seals, leading to reduced cooling performance, premature failure, and potential engine damage. HOWO’s pump is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance. By choosing the 1000402861, you benefit from HOWO’s rigorous testing, including flow rate verification, pressure cycling, and durability tests that simulate millions of kilometres of real‑world operation. This ensures that the pump meets the demanding requirements of heavy‑duty trucking. Moreover, genuine parts are backed by a comprehensive warranty and supported by HOWO’s global network, giving you confidence in your purchase.
OEM Authentic
Factory Quality
Long Service
Extended Life
Global Standard
Trusted Worldwide
Q: Which vehicles use the 1000402861 water pump?
A: The 1000402861 is designed for HOWO T7H, A7, and other models with MC11/MC13 engines, as well as many Sinotruk trucks with the same cooling system.
Q: What are the symptoms of a failing water pump?
A: Coolant leaks from the pump weep hole, unusual noise (grinding or squealing), engine overheating, reduced heater performance, and visible corrosion on the pump housing are common indicators.
Q: Does the pump come with a gasket or O‑ring?
A: The 1000402861 includes the pump only. We recommend purchasing the corresponding gasket or O‑ring separately to ensure a proper seal.
Q: How do I verify the correct part?
A: Check the OEM number on your existing pump. If it matches 1000402861, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 1000402861 Water Pump today! Explore our complete selection of genuine HOWO and Sinotruk cooling system components at Howo/Sitrak truck parts and keep your engine running cool and efficiently.
The 1000402861 Water Pump from HOWO is a testament to precision engineering and uncompromising quality. By choosing this genuine component, you ensure that your engine’s cooling system delivers the flow, reliability, and durability required for modern heavy‑duty trucking. Whether you are a professional mechanic or a fleet manager, this water pump offers the performance, longevity, and exact fit that you can count on. Trust HOWO – the benchmark for excellence in heavy‑duty truck components – and experience the difference that genuine quality makes.
We are a heavy-duty truck parts store. Please leave your contact information and inquiries. We will respond within 12 hours.
