CSF 3959 Radiator

CSF 3959 Radiator Overview

The CSF 3959 radiator is an OE-style replacement built with an aluminum core and plastic tanks for direct-fit cooling service. It is engineered for the 2021 Dodge Durango and 2018-2021 Jeep Grand Cherokee primary radiator applications, with cross-flow construction and 1 1/2-inch inlet and outlet connections.

CSF manufactures radiators to high-performance standards and validates cooling performance through lab testing. Part number 3959 is designed for buyers who need a radiator replacement that matches the original layout and dimensions for these late-model Dodge and Jeep platforms.

Key Features

• OE-style plastic tank and aluminum core construction
• Cross-flow radiator design
• Core thickness: 7/8 in.
• Core size: 20 in. wide x 25 1/8 in. long
• 1 1/2 in. left inlet and 1 1/2 in. right outlet
• Single-row core design
• No radiator cap supplied
• No engine oil cooler included

Detailed Description

CSF part number 3959 is a direct replacement radiator for select Dodge Durango and Jeep Grand Cherokee applications. The radiator uses an aluminum core with plastic tanks in an OEM-style layout, helping maintain the factory cooling system configuration while matching the vehicle’s inlet and outlet placement. Its cross-flow design and single-row core support efficient coolant flow in the intended factory setup.

This radiator cross-references Quality-Built 13978 for the same application. It is also listed with interchange references 68365278AA and CH3010392. For shoppers searching for a 2021 Dodge Durango radiator, a 2018-2021 Jeep Grand Cherokee primary radiator, or CSF 3959 replacement radiator fitment, this part is built around those exact vehicle listings.

What This Radiator Helps Address

• Cracked or leaking radiator tanks
• Restricted coolant flow from an aging radiator core
• Overheating caused by reduced heat transfer
• Corrosion or wear in the original cooling assembly
• Replacement needs after radiator damage or failure

Installation Notes and Tips

Verify inlet and outlet orientation before installation: this unit uses a left-side inlet and right-side outlet. Confirm radiator dimensions, hose routing, and mounting points against the original part before removal. Transfer any vehicle-specific components required by the application, and inspect hoses, clamps, and coolant condition during radiator replacement.

Quality Assurance

CSF states that its factories are ISO/TSO certified and that its radiators are engineered and wind-tunnel tested for cooling performance validation. Part number 3959 is built to support factory-style fitment for the listed Dodge Durango and Jeep Grand Cherokee applications.