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Qingdao Hailong Machinery Technology Co., Ltd. is one of the leading manufacturers and suppliers of automotive water pump housing in China, featured by quality products and good service. Welcome to buy durable automotive water pump housing made in China here and get pricelist from our factory. Also, customized service is available.

Core Product Features

Premium Material & Reliable Performance: According to different vehicle models and usage requirements, materials such as cast iron (such as HT200, HT250), aluminum alloy (such as A356, ADC12) or engineering plastics (such as PPS+GF40, PPA+GF) can be selected. The cast iron water pump housing has high strength and wear resistance, with a tensile strength of ≥200MPa; the aluminum alloy material is lightweight, with a density of about 2.7g/cm³, which can reduce the weight by 30%-50% compared with cast iron, and has good corrosion resistance; the engineering plastic material has good high-temperature resistance, chemical corrosion resistance and dimensional stability.
Precision Manufacturing & Accurate Dimensions: Adopt precision casting processes (such as sand casting, gravity casting, high-pressure die-casting, etc.) or injection molding processes, with strict control of dimensional tolerances. Among them, when using the casting process, the key hole diameter tolerance is ≤±0.05mm, and the flatness is ≤0.03mm/m; when using the injection molding process, the dimensional tolerance is ≤±0.1mm/m. The inner surface roughness of the housing is low, which can reduce the coolant flow resistance and ensure the stability of the coolant flow.
Optimized Structure & Efficient Cooling: The interior of the housing is designed with a reasonable flow channel, which can guide the coolant to flow smoothly from the inlet to the outlet, reducing flow resistance and eddy current, and improving cooling efficiency. At the same time, the structural design of the housing also takes into account the cooperation with components such as impellers and bearings to ensure the operation stability of the water pump, and the coolant flow and pressure can meet the cooling needs of the engine.
Good Sealing & Leakage Prevention: The connection parts of the water pump housing with the engine block, water pipes and other components adopt reliable sealing structures, such as sealing rings, gaskets, etc., with good sealing performance, which can withstand a pressure of ≥1.5MPa without leakage, effectively preventing coolant leakage and ensuring the normal operation of the cooling system.
Full-scenario Adaptation & Strong Customization: Suitable for a variety of vehicle models such as sedans, SUVs, MPVs, light trucks and buses. According to the drawings or technical requirements provided by customers, the outer dimensions, installation interfaces, flow channel structures, etc. of the housing can be accurately developed to meet the needs of different engine models and cooling systems.

Core Process Advantages

Independent Mold Development: In-house professional mold workshop, using CAD/CAE technology for mold design and simulation analysis, able to optimize the mold structure according to the structural characteristics and performance requirements of the product, improve the mold accuracy and service life, and shorten the sample-making cycle by 20%.
Full-process Quality Control: Strict quality control is carried out from raw material procurement to product delivery. Raw materials are subjected to spectral analysis, mechanical property testing, etc. to ensure that the materials meet the requirements; production process parameters such as temperature, pressure and time are monitored in real-time; finished products are subjected to dimensional accuracy testing, sealing testing, pressure testing, etc., and a complete test report is provided for each batch, and the quality is traceable.
Advanced Equipment & Efficient Production: Introduce advanced casting equipment, injection molding equipment and processing equipment at home and abroad, such as fully automatic die-casting machines, injection molding machines, CNC machine tools, etc., with high production efficiency, able to meet the needs of large-volume orders, and at the same time ensure the stability of product quality.

Application Scenarios

Passenger Cars: Engine cooling systems of sedans, SUVs, MPVs and other models, adapting to different displacement and types of engines.
Commercial Vehicles: Light trucks, heavy trucks, buses, etc., providing reliable cooling 保障 for high-power engines.
New Energy Vehicles: Cooling systems for components such as motors and batteries of pure electric and hybrid vehicles, meeting the requirements of new energy vehicles for lightweight and high-performance.

Typical Application Cases

Passenger Car - Sedan Cooling System: Provided A356 aluminum alloy water pump housing for a well-known sedan brand, which is lightweight and has good heat dissipation performance. It has been batch-supplied to 200,000 complete vehicles, and the cooling system operates stably without coolant leakage and other problems.
Commercial Vehicle - Heavy Truck Engine Cooling: Supplied HT250 cast iron water pump housing, adapting to high-power heavy truck engines, able to withstand high pressure and high temperature. Under harsh working conditions, the service life is ≥8 years, and it has been applied to more than 10,000 heavy trucks.
New Energy Vehicle - Motor Cooling: Customized PPS+GF40 engineering plastic water pump housing for a new energy vehicle enterprise, which has good high-temperature resistance and chemical corrosion resistance, meeting the needs of the new energy vehicle motor cooling system, with an annual supply of more than 50,000 units.

Quality Assurance

Test Reports: Provide raw material quality reports, mechanical property test reports, dimensional accuracy reports, sealing test reports, pressure test reports, etc.
After-sales Commitment: For non-human damage, unqualified products will be replaced free of charge within 12 months; provide lifelong technical consultation and after-sales service, and promptly solve problems encountered by customers during use.
Quality Standards: Strictly comply with GB/T 9439-2010 Gray Cast Iron Parts Standard, GB/T 15114-2021 Aluminum Alloy Die Casting Parts Standard or relevant national and industry standards for engineering plastic parts.

Main Technical Specifications (Standard Models)

Parameter Type	Specification Range
Material Grade	HT200, HT250 Cast Iron; A356, ADC12 Aluminum Alloy; PPS+GF40, PPA+GF Engineering Plastics
Adaptable Vehicle Models	Sedans, SUVs, MPVs, Light Trucks, Buses, New Energy Vehicles, etc.
Key Accuracy	Key Hole Diameter Tolerance ≤±0.05mm (Casting); Dimensional Tolerance ≤±0.1mm/m (Injection Molding); Flatness ≤0.03mm/m
Sealing Pressure	≥1.5MPa
Coolant Flow	Customized according to different vehicle models and engine requirements
Working Temperature	-40℃-120℃ (Conventional Materials)
Service Life	≥8 Years (Normal Working Conditions)