The Story
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.
Description
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.













