The radiator plastic tank (also known as plastic radiator tank, water chamber, side tank, or water trough) is a critical sealing and flow-guiding component of automotive radiators. Shown as a matched pair (upper/lower or left/right), it forms a closed cavity for coolant circulation, directing coolant evenly through the aluminum core to achieve efficient engine heat dissipation.

Whether you need an automotive radiator plastic tank, car radiator plastic tank, or auto radiator tank plastic for passenger cars, this component integrates inlet/outlet ports, fixing clips, and sensor mounting positions – acting as both the “skeleton” and “coolant hub” of the radiator. Replacing traditional aluminum tanks, it offers lightweight, cost-effective performance while meeting pressure and temperature demands of modern cooling systems.

• Lightweight – Over 30% weight reduction compared to aluminum tanks, contributing to vehicle weight savings and lower fuel consumption.

• Cost-Effective – Lower production cost via injection molding, and much cheaper to replace than full aluminum radiators.

• Integrated Design – Molded-in clips, ports, and reinforcing ribs reduce assembly steps and improve reliability.

• Corrosion Resistant – PA66-GF30 material provides excellent resistance to ethylene glycol and antifreeze, no corrosion over long-term use.

• Highly Adaptable – Customizable to OEM parameters for most passenger cars, commercial vehicles, forklifts, and construction machinery.

• OEM & Aftermarket Ready – Perfect as an OEM radiator plastic tank or aftermarket radiator plastic tank for radiator plastic tank replacement in cars, trucks, and more.

• Design: Matched upper/lower or left/right pair, with corrugated reinforcing ribs (enhances structural strength against pressure deformation), mounting clips, inlet/outlet ports, sensor/hose interfaces.

• Application: Radiators for passenger cars, commercial vehicles, forklifts, construction machinery (fuel/hybrid) – ideal as radiator plastic tank for cars or plastic radiator tank for truck.

• Process: Precision injection molded radiator tank; dimensional tolerance ±0.1 mm for perfect sealing with core.

• Sealing: Rubber sealing strip + crimping process (some models support repair welding).

• Aging Test: 1000 hours in high-temperature coolant – no leakage, deformation, or embrittlement.

• Thermal Shock: 1000 cycles from -40°C to 125°C – no cracking or seal failure.

• Vibration Test: Compliant with GB/T 13043 – no loosening or leakage under prolonged driving conditions.

• Professional radiator plastic tank manufacturer & supplier – factory direct with ISO/TS certification.

• Custom radiator plastic tank available – we support mold modification and OEM parameter matching.

• Wholesale radiator plastic tank orders welcome – competitive pricing for global buyers.

• 100% leak-tested before shipment; fast lead times and technical support for cross-reference fitment.

• OEM Fitment: These tanks are service/replacement parts for radiator repair and remanufacturing, available for most vehicle brands.

• Export Markets: Popular in AM (aftermarket) sectors of Europe, America, Southeast Asia, and the Middle East; fit Japanese, Korean, European, American, and Chinese models.

• Important: Always match the radiator model and ensure identical interface dimensions and mounting positions to avoid leakage.

For over 15 years, SUNHOPE has been a leading manufacturer and developer specializing in automotive radiator and condenser components, exporting globally. Our expertise encompasses the entire radiator production line.

• Factory Setup Support: We assist international clients in establishing local radiator/condenser manufacturing plants, providing tailored solutions based on 15+ years of industry knowledge.
• Comprehensive Equipment Supply: We supply complete production lines (including CKD kits) and offer pre-sales & after-sales technical support. Our engineers provide on-site installation guidance.
• Full Component Supply: SUNHOPE is your single source for all essential radiator and condenser hardware and plastic components, guaranteeing supply chain reliability and finished product quality.
• Technical Expertise: As equipment users ourselves, we possess deep operational understanding, enabling us to quickly identify and resolve potential production issues.

• Extensive Mould Inventory: Over 200 proprietary head plate moulds covering most popular global vehicle models.
• Equipment Expertise: 10+ years of hands-on radiator manufacturing experience allows us to recommend and source optimal machinery for your needs.
• Superior After-Sales Support: Strong partnerships with equipment providers ensure prompt and effective service. Our user perspective enables faster, more accurate problem-solving.
• True One-Stop Solution: From factory design, equipment supply, and component sourcing to technical support - SUNHOPE delivers seamless integration for successful radiator production startup and operation.