CSF 3757 Radiator

CSF Radiator for Hyundai Optima and Kia Sonata

The CSF radiator part number 3757 is designed specifically for Hyundai Optima and Kia Sonata models. Engineered with an aluminum core and plastic tanks, this radiator offers reliable cooling performance tailored to your vehicle's needs.

• Core thickness: 7/8 inch
• Core width: 18 1/4 inches
• Core length: 18 5/16 inches
• Aluminum core material with plastic tanks
• Cross flow design for efficient heat dissipation
• Inlet and outlet diameter: 1 3/8 inches (right inlet, left outlet)
• Includes a high-efficiency plate type oil cooler (14 9/16 inches)
• One core row for optimized cooling

Technical Details and Construction

This CSF radiator (part number 3757) features an aluminum core that provides effective heat transfer while maintaining durability. The plastic tanks are designed in an OEM style to ensure proper fitment and compatibility with Hyundai Optima and Kia Sonata vehicles. The cross flow core type enhances coolant flow across the radiator, improving overall engine temperature regulation. Both the inlet and outlet have a diameter of 1 3/8 inches, positioned on the right and left sides respectively, matching factory specifications.

Applications and Problem Solving

This radiator is compatible with Hyundai Optima and Kia Sonata models requiring a replacement cooling component. It addresses several common issues including:

• Overheating due to radiator core damage or clogging
• Coolant leaks from cracked or worn plastic tanks
• Reduced cooling efficiency from corrosion or buildup
• Oil cooler failure affecting engine temperature regulation
• Incompatibility with aftermarket or generic radiators

Installation Notes and Tips

When installing the CSF radiator 3757, ensure the vehicle is fully cooled before removal. Verify that the inlet and outlet hose diameters match the radiator connections (1 3/8 inches). The cross flow design requires proper orientation for optimal coolant flow. It is recommended to inspect and replace radiator hoses and clamps during installation to prevent leaks. This radiator does not include a cap; use the compatible CSF cap number 4503 if needed.

Quality Assurance and Warranty

CSF radiators are manufactured to meet OEM standards, using high-quality aluminum cores and plastic tanks for durability and performance. This radiator is free of hazardous materials and designed for long-term reliability. While specific warranty details may vary, CSF products typically come with a limited warranty covering defects in materials and workmanship.