CSF 3813 Radiator

OE-Style Radiator for Fusion and MKZ

This CSF radiator is built for 2017-2020 Ford Fusion and Lincoln MKZ applications with an OE-style plastic tank and aluminum core design. Part number 3813 is a cross flow radiator engineered for direct-fit cooling performance in the listed vehicles.

Key Features

• 1-row radiator with an aluminum core and plastic tanks
• Cross flow design for the listed Ford and Lincoln applications
• Core thickness: 1 1/4 in.
• Core dimensions: 26 1/2 in. length and 17 11/16 in. width
• Inlet diameter: 1 5/16 in. left; outlet diameter: 1 5/16 in. right
• OE-style plastic tanks and aluminum core construction
• Cap not included

Product Details

CSF part number 3813 is part of the brand’s 1 Row Plastic Tank Aluminum Core line, built around OE-style construction for a factory-like fit and cooling layout. CSF manufactures a wide range of radiator models and validates cooling performance through lab testing, with production backed by ISO/TSO-certified factories. This radiator is listed for 2017-2019 Ford Fusion and 2017-2019 Lincoln MKZ, plus 2020 Ford Fusion and 2020 Lincoln MKZ with an upgraded heavy-duty core specification.

This part cross-references Bosch 13658 and Spectra Premium CU13658 for the same application.

Common Cooling Issues It Can Address

• Cracked or leaking radiator tanks
• Restricted coolant flow from an aging core
• Overheating caused by reduced heat transfer
• Corrosion or internal wear in the original radiator
• Fitment problems when replacing a damaged OE-style unit

Installation Notes and Tips

Verify inlet and outlet orientation before installation: inlet is on the left and outlet is on the right. Confirm the radiator matches the vehicle’s OE-style layout and cooling connections for the specific Fusion or MKZ model year. Inspect hoses, clamps, and coolant condition during replacement to help ensure proper system sealing and operation.

Quality Assurance

CSF radiators are manufactured in ISO/TSO-certified facilities and developed with performance validation testing, including wind tunnel evaluation for cooling efficiency. The brand has supplied radiators worldwide for more than 50 years and produces a broad catalog of applications for major vehicle platforms.