CSF 3663 Radiator

CSF 3663 Radiator for Ram 2500/3500

The CSF 3663 is an OE-style replacement radiator built for 2013-2018 Ram 2500 and Ram 3500 applications. It uses an aluminum core with plastic tanks and a cross-flow design to match factory-style cooling system layout and fitment.

Key Features

• Fits 2013-2018 Ram 2500, primary radiator
• Fits 2013-2018 Ram 3500, primary radiator
• Aluminum core with plastic tanks for OE-style construction
• Cross-flow radiator design with 2-row core
• Core thickness: 1 5/8 in.
• Inlet diameter: 1 13/16 in. left; outlet diameter: 1 13/16 in. right
• Includes a 12 in. high-efficiency plate-type oil cooler with quick-connect fittings
• Cap not included

Detailed Description

CSF Part Number 3663 is engineered as a direct-fit primary radiator for Ram 2500 and Ram 3500 trucks from 2013 through 2018. The radiator uses an OE-style plastic tank and aluminum core construction, with a cross-flow layout and 2-row core design to match the factory cooling package. CSF states its radiators are built to high performance standards, wind tunnel tested for cooling validation, and manufactured in ISO/TSO certified facilities. This part cross-references TYC 13491 and OSC 13490 for the same application.

For buyers searching for a 2013-2018 Ram 2500 radiator or 2013-2018 Ram 3500 radiator, CSF 3663 provides the factory-style dimensions and connection points needed for a proper replacement. The integrated oil cooler and quick-connect fittings are important details for trucks equipped with the original cooling configuration.

Common Reasons to Replace

• Coolant leaks from cracked or aged plastic tanks
• Reduced cooling performance from internal core restriction
• Transmission or engine temperature concerns tied to radiator wear
• Damaged inlet or outlet connections
• Oil cooler leakage or fitting issues at the radiator

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet orientation, and oil cooler connection style before installation. This radiator uses a left-side inlet and right-side outlet, with quick-connect oil cooler fittings. Transfer any required factory components from the original unit if your vehicle configuration calls for them, and confirm that the cooling system is properly flushed and refilled after installation.

Quality Assurance

CSF manufactures radiators to controlled production standards and validates cooling performance during development. Part Number 3663 is built for OE-style fitment on Ram 2500 and Ram 3500 applications and is backed by CSF’s long-running radiator manufacturing experience.