CSF 3702 Radiator

CSF 3702 Radiator for Prius C

CSF 3702 is an OE-style radiator built with a plastic tank and aluminum core layout for direct replacement service. It is engineered for the 2012-2019 Toyota Prius C and uses a cross flow design with left-side inlet and right-side outlet connections.

Key Features

• OE-style plastic tanks with aluminum core construction
• 1-row core design for factory-style cooling system replacement
• Cross flow configuration
• Core thickness: 5/8 in.
• Core dimensions: 23 5/8 in. length x 16 3/16 in. width
• Inlet diameter: 1 1/4 in. left; outlet diameter: 1 1/4 in. right
• Brand line: 1 Row Plastic Tank Aluminum Core
• Part number: 3702

Detailed Description

This CSF radiator is built to match the OE-style layout used in the Toyota Prius C cooling system. The aluminum core and plastic tank construction supports efficient heat transfer while maintaining the factory-style fitment expected for a direct radiator replacement. CSF states its radiators are engineered to high performance standards, validated through wind tunnel testing, and manufactured in ISO/TSO-certified facilities. Part number 3702 is part of CSF’s broad radiator catalog, which covers many vehicle applications across the market.

Compatible With 2012-2019 Toyota Prius C, N/A. This part cross-references APDI 8013319 for the same application.

Common Cooling System Issues

• Coolant leaks from a damaged radiator tank or core
• Overheating caused by restricted coolant flow
• Corrosion or age-related deterioration in the original radiator
• Reduced cooling performance from a worn OE radiator
• Replacement needs after impact or front-end damage

Installation Notes and Tips

Verify inlet and outlet orientation before installation: this radiator uses a left inlet and right outlet layout. Confirm core dimensions and mounting points against the original unit on the Toyota Prius C before removal. Always inspect hoses, clamps, and coolant condition during radiator replacement, and refill the system with the correct coolant specification after installation.

Quality Assurance

CSF manufactures radiators to controlled production standards and validates cooling performance during development. The brand has supplied radiators worldwide for decades and offers a large range of applications, including the Prius C radiator replacement covered by part number 3702.