CSF 3696 Radiator

OE-Style Cooling for Subaru Forester

The CSF 3696 radiator is built for 2014-2018 Subaru Forester applications that call for an OE-style plastic tank and aluminum core design. It combines a 1-row layout with down-flow construction to support stable engine cooling in daily driving and demanding conditions.

For Subaru Forester owners searching for a direct-fit radiator replacement, CSF 3696 delivers the dimensions and connection layout needed for proper installation and reliable coolant flow. The 1 9/16 in. inlet and outlet are positioned on the left side, matching the listed fitment and OE-style configuration.

Key Features

• Fits 2014-2018 Subaru Forester, N/A
• CSF part number 3696
• 1-row radiator with down-flow design
• Aluminum core with plastic tanks
• Core thickness: 7/8 in.
• Core width: 27 in.; core length: 13 7/16 in.
• Inlet and outlet diameter: 1 9/16 in. left
• OE-style plastic tank and aluminum core construction

Product Details

CSF’s 1 Row Plastic Tank Aluminum Core radiator line is engineered around OE-style construction for vehicles that need a direct replacement with factory-style fit and function. CSF manufactures radiators to high-performance standards and validates cooling performance through laboratory wind-tunnel testing. With broad manufacturing coverage across thousands of radiator models, the brand supports a wide range of vehicle applications, including the Subaru Forester radiator replacement market. This CSF 3696 radiator is designed to match the listed dimensions and connection points for 2014-2018 Subaru Forester models.

This part cross-references Bosch 13425 and OSC 13424 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 wear in an original radiator assembly
• Fitment problems when replacing a damaged OE-style radiator

Installation Notes and Tips

Verify core dimensions, inlet and outlet location, and left-side hose orientation before installation. Confirm that the radiator matches the vehicle’s OE-style plastic tank and aluminum core layout, and inspect hoses, clamps, and coolant condition during replacement. The cap is not included; use the specified CSF cap number 4540 if required by the application.

Quality Assurance

CSF radiators are manufactured in ISO/TSO-certified facilities and are built to meet high-performance cooling standards. The brand states that its radiators are engineered and tested for cooling performance validation, supporting dependable replacement quality for Subaru Forester cooling system service.