CSF 3509 Radiator

CSF 3509 Radiator for Ford Fiesta

The CSF 3509 is an OE-style radiator built with a plastic tank and aluminum core for the 2011-2019 Ford Fiesta. It is designed for direct replacement service where the original cooling system layout uses a down-flow configuration with left-side inlet and right-side outlet connections.

Key Features

• OE-style plastic tank and aluminum core construction
• 1-row core design for factory-style cooling system replacement
• Down-flow radiator layout
• Core dimensions: 22 in. wide, 13 7/8 in. long, 11/16 in. thick
• Inlet diameter: 1 1/8 in. left
• Outlet diameter: 1 1/8 in. right
• Built by CSF, a radiator manufacturer with ISO/TSO-certified factories

Detailed Description

CSF part number 3509 is engineered as a direct-fit radiator for the Ford Fiesta from 2011 through 2019. The OE-style plastic tank and aluminum core design follows the factory cooling layout, making it a practical replacement for vehicles that need a radiator with the same down-flow configuration and connection placement. CSF manufactures radiators for a wide range of vehicle applications and validates cooling performance through laboratory wind tunnel testing. This part cross-references Carlson 13201 for the same application.

The CSF 3509 is part of CSF’s 1 Row Plastic Tank Aluminum Core product line, which focuses on factory-style radiator construction for everyday repair and replacement needs. For shoppers searching for a radiator for 2011-2019 Ford Fiesta, Ford Fiesta radiator replacement, or CSF 3509 radiator, this unit matches the listed fitment and core specifications.

Common Problems This Radiator Can Address

• Coolant leaks from a damaged or aging radiator tank
• Restricted cooling performance caused by internal core wear or blockage
• Overheating from a radiator that no longer transfers heat effectively
• Cracked plastic end tanks from heat cycling and age
• Fitment issues when replacing a factory-style down-flow radiator

Installation Notes and Tips

Verify the inlet and outlet orientation before installation: this radiator uses a left inlet and right outlet with 1 1/8 in. connections. Confirm the vehicle’s original radiator dimensions and down-flow layout match the listed specifications for the 2011-2019 Ford Fiesta. Transfer any required vehicle-specific components from the original system as needed, and inspect hoses, clamps, and coolant condition before completing the repair.

Quality Assurance

CSF states that its factories are ISO/TSO certified and that its radiators are engineered to high-performance standards. The brand also notes that its radiator designs are tested for cooling performance validation before release.