CSF 3680 Radiator

OE-Style Radiator for Pathfinder and QX60

CSF 3680 is an OE-style radiator built with a plastic tank and aluminum core for direct replacement fitment on select Nissan Pathfinder and INFINITI QX60 applications. It is engineered as a down-flow radiator with a 1-row core layout to match the factory cooling package while supporting updated heavy-duty coverage on later models.

The CSF 1 Row Plastic Tank Aluminum Core line focuses on factory-style construction with validated cooling performance. For shoppers searching for a 2020-2025 Nissan Pathfinder radiator or a 2020-2025 INFINITI QX60 radiator, part number 3680 provides the correct OE-style format for these applications.

Key Features

• Part number: 3680
• OE-style plastic tank and aluminum core construction
• Down-flow design with 1-row core
• Core thickness: 1 1/4 in.
• Core width: 29 11/16 in.
• Core length: 19 9/16 in.
• Inlet and outlet diameter: 1 3/8 in., right side
• Oil cooler: 19 11/16 in. high-efficiency concentric type
• No radiator cap included
• CSF cap number: 4503

Product Details

CSF manufactures radiators to high-performance standards using ISO/TSO-certified factory processes and laboratory wind-tunnel testing for cooling validation. This radiator is built to the OE-style plastic tank and aluminum core format, making it a direct-fit cooling replacement for 2013-2019 Nissan Pathfinder, 2015-2019 INFINITI QX60, and related hybrid and updated heavy-duty applications listed below. The design supports factory-style hose routing and cooling-system layout while maintaining the dimensions needed for proper installation.

This part cross-references Bosch 13348 and Spectra Premium CU13348 for the same application.

Fitment

• Fits 2020-2025 INFINITI QX60, N/A — Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm; 1 Row Plastic Tank Aluminum Core
• Fits 2020-2025 Nissan Pathfinder, N/A — Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm; 1 Row Plastic Tank Aluminum Core
• Fits 2015-2019 INFINITI QX60, N/A — OE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
• Fits 2013-2019 Nissan Pathfinder, N/A — OE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core
• Fits 2016-2017 INFINITI QX60, N/A — OE Style Design; Hybrid; 1 Row Plastic Tank Aluminum Core
• Fits 2014-2015 Nissan Pathfinder, N/A — OE Style Design; Hybrid; 1 Row Plastic Tank Aluminum Core
• Fits 2014 INFINITI QX60, N/A — OE Style Design; To 4/14; 1 Row Plastic Tank Aluminum Core
• Fits 2014 INFINITI QX60, N/A — OE Style Design; Hybrid; To 4/14; 1 Row Plastic Tank Aluminum Core
• Fits 2013 INFINITI JX35, N/A — OE style design ensures optimal fitment and performance.; 1 Row Plastic Tank Aluminum Core

Installation Notes

Verify inlet and outlet orientation before installation, since this radiator uses right-side 1 3/8 in. connections. Confirm vehicle build date and hybrid or heavy-duty configuration against the fitment notes, especially for 2014 INFINITI QX60 applications and 2020-2025 Pathfinder or QX60 models. Transfer any reusable cooling-system components as required by the vehicle service procedure, and inspect hoses, clamps, and the cooling fan assembly before refilling and bleeding the system.

Quality Assurance

CSF radiators are produced in ISO/TSO-certified facilities and validated through engineering and wind-tunnel testing for cooling performance. The brand has supplied radiators worldwide for more than 50 years and has manufactured over 30 million units across a broad range of vehicle applications.