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Help CenterAuto Water Pump Housing Custom Injection Molding – Engineering Plastic PBT, High Temp Resistant 150°C
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Changzhou Hongxinyutai Precision Mold Co., Ltd. has been a trusted manufacturer of precision injection molded components since 2012. Our Auto Water Pump Housing Custom Injection Molding service delivers durable, high-performance housings made from engineering plastic PBT, designed to withstand continuous exposure to 150°C. Leveraging our advanced mold-making expertise and IATF 16949:2016-certified quality management system, we provide customized solutions that meet the exact thermal, mechanical, and dimensional requirements of modern automotive cooling systems.
Each housing is produced using state-of-the-art injection molding equipment, ensuring consistent wall thickness, minimal warpage, and excellent surface finish. Our engineering team works closely with clients to optimize part design for manufacturability, reducing cycle times and material waste while maintaining the highest standards of reliability.
Whether you need a standard replacement or a fully custom design, our flexible production capabilities support volumes from small prototypes to high-volume series. Below you will find key specifications and advantages that make our water pump housings a preferred choice among OEMs and aftermarket suppliers worldwide.
Product Features & Technical Specifications
Material: Engineering plastic PBT (Polybutylene Terephthalate) – excellent thermal stability, chemical resistance, and dimensional stability.
Temperature Resistance: Continuous operating temperature up to 150°C; short-term peak up to 200°C (depending on exact formulation).
Customization Options: Full customization of dimensions, wall thickness, mounting flange design, inlet/outlet diameters, and connector interfaces.
Surface Finish: As-molded smooth finish or textured per customer specification; suitable for sealing surfaces with O-rings or gaskets.
Precision Molding: Achievable tolerances of ±0.05 mm for critical sealing and assembly features.
Certification: Our production facility is IATF 16949:2016 certified, ensuring strict process control and traceability.
Testing: Each part undergoes dimensional inspection and optional pressure/leak testing upon request.
| Parameter | Typical Value / Range |
|---|---|
| Material | PBT (GF30% optional) |
| Max Continuous Temperature | 150°C |
| Tensile Strength (at 23°C) | 60–80 MPa (depending on grade) |
| Dielectric Strength | 20 kV/mm |
| Water Absorption (24h) | |
| Mold Life (cavity) | 500,000+ shots (with proper maintenance) |
| Lead Time for New Tooling | 25–45 days (depending on complexity) |
| Packing | Standard export carton + pallet; customizable packaging available |
Our PBT water pump housing offers a lightweight alternative to metal without compromising on strength or thermal performance. This contributes to overall vehicle weight reduction, improved fuel efficiency, and lower production costs. The material’s inherent resistance to coolants, oils, and road salts ensures long service life under harsh under-hood conditions.
Advantages for Your Business:
Cost Efficiency: Injection molding in PBT reduces secondary machining operations and assembly steps compared to die-cast aluminum or stainless steel.
Design Flexibility: Complex geometries – such as integrated mounting brackets, flow channels, and sensor ports – can be molded directly, simplifying your final assembly.
Global Sourcing: With shipment ports in Jiangsu, Shanghai, and Shenzhen, we serve customers across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. Our logistics team ensures timely delivery worldwide.
Quality Assurance: Every production run is monitored in real time, and final parts are sampled according to AQL standards. IATF 16949:2016 certification guarantees a robust quality management system.
Since 2012, Changzhou Hongxinyutai Precision Mold Co., Ltd. has grown to a factory size of 1,000–3,000 square meters with 51–100 skilled employees. Our team combines decades of mold-making experience with modern injection technology. We have successfully delivered precision components to markets in over 15 countries and regions.
Our IATF 16949:2016 certified processes ensure strict control from raw material sourcing through final inspection. With a dedicated R&D department, we continuously improve mold designs to reduce cycle times and enhance part quality. We take pride in our ability to handle complex custom projects, often helping clients reduce part weight by 30–50% compared to metal equivalents.
Ready to order a custom auto water pump housing? Contact us today with your drawings or 3D models. Our engineering team will provide a detailed DFM (Design for Manufacturing) analysis and a competitive quote within 48 hours. Benefit from our reliable supply chain, strict quality control, and responsive after-sales support.
Frequently Asked Questions
Q: What is the minimum order quantity (MOQ) for custom water pump housings?
A: MOQ is typically 1,000 pieces for standard customization. For prototype or low-volume runs (100–500 pcs), we can discuss based on design complexity and mold investment. Contact us for a tailored solution.Q: Can you produce housings for electric vehicle water pumps?
A: Yes. Our PBT material is suitable for both ICE and EV cooling systems. We can adapt the housing design to accommodate different pump types, including brushless DC pumps.Q: How do you ensure the housing withstands 150°C continuously?
A: We use high-grade PBT compounds with thermal stabilizers. Our in-house testing includes thermal aging and heat deflection tests according to ISO 75. We also provide material certification upon request.Q: Do you offer pressure testing or leak testing before shipping?
A: Yes, we offer 100% air-under-water leak testing as an optional service. Standard deviation is less than 0.5% leakage rate at 0.5 bar pressure. This ensures no coolant loss during operation.Q: What tolerances can you hold on critical sealing surfaces?
A: For O-ring grooves and mating faces, we hold ±0.05 mm. For non-critical dimensions, ±0.1 mm is standard. We can tighten tolerances further with additional tooling adjustment.Q: How long does it take to produce a new mold for a custom housing?
A: Typical lead time is 25–45 days, depending on part complexity and mold steel availability. Emergency projects can be expedited. We also offer soft tooling for rapid prototyping.Q: Do you provide samples for evaluation before mass production?
A: Yes, we can provide T1 samples (first shot from the new mold) for dimensional and functional approval. Samples are shipped within 5–7 days after mold completion.Q: Are there any certifications for the raw material used?
A: We can provide material data sheets (MDS) and safety data sheets (SDS) for each batch. The final product is produced under IATF 16949:2016 quality system.
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