CSF 3779 Radiator

CSF 3779 Radiator for Mazda 3

The CSF 3779 radiator is an OE-style cooling replacement built with an aluminum core and plastic tanks for the 2014-2018 Mazda 3 and 2014 Mazda 3 Sport. It is engineered for direct-fit service on Japan-built applications and follows a down-flow design for factory-style cooling system layout.

Key Features

• Aluminum core with plastic tanks for OE-style construction
• Down-flow radiator design
• Single-row core configuration
• Core dimensions: 29 1/16 in. wide, 14 3/4 in. long, 5/8 in. thick
• Inlet: 1 5/16 in. left; outlet: 1 5/16 in. center
• Designed for 2014-2018 Mazda 3 and 2014 Mazda 3 Sport, Japan built
• CSF part number 3779 for easy identification

Detailed Description

CSF part number 3779 is a replacement radiator built to match the OE-style plastic tank and aluminum core layout used in the Mazda 3 cooling system. The radiator’s dimensions, inlet and outlet placement, and down-flow configuration support factory-style fitment on 2014-2018 Mazda 3 models and the 2014 Mazda 3 Sport, Japan built. CSF manufactures radiators to performance-focused standards and validates cooling performance during development, making this unit a practical choice when replacing a leaking, clogged, or damaged radiator on a Mazda 3.

This part cross-references Bosch 13404 for the same application.

What This Radiator Helps Address

• Coolant leaks from cracked or aging radiator tanks
• Restricted coolant flow from internal corrosion or sediment buildup
• Overheating caused by reduced heat transfer efficiency
• Physical damage to the radiator core or end tanks
• Cooling system service needs on a Mazda 3 or Mazda 3 Sport

Installation Notes and Tips

Verify radiator hose routing, inlet and outlet orientation, and mounting points before installation. This radiator does not include a cap, and the listed CSF cap number is 4503 if a matching cap is needed separately. Confirm vehicle application by year, model, and Japan-built configuration for the Mazda 3 before ordering. CSF part number 3779 is intended for direct replacement use in the listed applications.

Quality Assurance

CSF states that its factories are ISO/TSO certified and that its radiators are engineered and tested for cooling performance validation. The brand has supplied radiators worldwide for more than 50 years and manufactures a broad range of radiator applications.