CSF 3670 Radiator

OE-Style Cooling for Ford and Lincoln

CSF 3670 is a cross flow radiator built with an aluminum core and plastic tanks in an OE-style layout. It is engineered for direct replacement use on select Ford F-150, Ford Expedition, and Lincoln Navigator applications with tow package or super cooling configurations.

The CSF product line is built to high performance standards and validated through wind tunnel testing for cooling performance. With more than 10,000 radiator models manufactured for leading vehicle brands, CSF 3670 reflects the brand’s focus on application-specific fit and thermal efficiency.

Key Features

• Part number: 3670
• 1-row radiator design
• Aluminum core with plastic tanks
• Cross flow construction
• Core thickness: 1 1/4 in.
• Inlet diameter: 1 1/2 in., right side
• Outlet diameter: 1 1/2 in., left side
• OE-style plastic tanks with aluminum core
• Quick-connect outlet pipe and curled side rails
• Integrated 12 in. high-efficiency plate-type oil cooler

Detailed Description

CSF 3670 is designed as an OE-style radiator replacement with plastic tanks and an aluminum core for select Ford and Lincoln trucks and SUVs. The cross flow layout, 1-row core, and 1 1/4 in. thickness support factory-style cooling system packaging, while the quick-connect outlet pipe and curled side rails match the original design approach. This radiator is a direct-fit solution for 2011-2014 Ford F-150, 2015-2017 Ford Expedition, and 2015-2017 Lincoln Navigator applications.

This part cross-references BBB Industries 13229 and Bosch 13228 for the same application.

What It Helps Address

• Overheating caused by a worn or restricted radiator core
• Coolant leaks from aging plastic tank construction
• Reduced heat transfer from a damaged or inefficient radiator
• Cooling system service needs on tow package Ford Expedition and Lincoln Navigator models
• Replacement needs for Ford F-150 super cooling applications

Installation Notes and Tips

• Verify inlet and outlet orientation before installation: inlet right, outlet left.
• Confirm vehicle configuration against the listed fitment, especially tow package and super cooling applications.
• Inspect hoses, clamps, and coolant condition during radiator replacement.
• Transfer or reconnect any vehicle-specific components according to OE service procedures.

Quality Assurance

CSF manufactures radiators in ISO/TSO-certified facilities and validates cooling performance through laboratory wind tunnel testing. The brand has supplied radiators worldwide for more than 50 years and has produced over 30 million units across its catalog.