CSF 3777 Radiator

CSF 3777 Radiator Overview

The CSF 3777 radiator is an OE-style replacement built with an aluminum core and plastic tanks for select Volkswagen and Audi applications. It is engineered as a cross flow radiator with quick-connect inlet and outlet pipe connections, making it a direct-fit cooling system service part for vehicles such as the Volkswagen Passat, Jetta, CC, Golf, Eos, and Audi A3 Quattro and TT Quattro.

Key Features

• Aluminum core with plastic tank construction
• Cross flow design for the listed applications
• 1 1/4 in. inlet and 1 1/4 in. outlet, left-side configuration
• Single-row radiator core
• OE-style plastic tanks with aluminum core and quick-connect inlet/outlet pipe
• Cap not included
• CSF part number 3777 for catalog and fitment reference

Detailed Description

CSF designs and manufactures radiators to performance-focused standards using validated cooling development methods. The 3777 radiator follows an OE-style layout with a 25 9/16 in. core length, 17 in. core width, and 1 1/4 in. core thickness, along with 17 11/16 in. inlet and outlet dimensions. This radiator is built for direct replacement service on compatible Volkswagen Passat, Volkswagen CC, Volkswagen Golf with Warm Climate Option, Volkswagen Jetta with Warm Climate Option, Volkswagen Passat CC, Volkswagen Eos, Audi A3 Quattro, and Audi TT Quattro applications. If you are replacing a leaking or restricted radiator on a Volkswagen Passat or Audi A3 Quattro, CSF 3777 provides the correct OE-style layout for the cooling system.

This part cross-references Anchor 2964 for the same application.

What This Radiator Helps Address

• Coolant leaks from a cracked or aged radiator tank
• Restricted coolant flow caused by internal buildup or corrosion
• Overheating from reduced heat transfer efficiency
• Damaged inlet or outlet connections on the original radiator
• Cooling system service needs on Volkswagen Passat, Jetta, CC, Golf, Eos, and Audi Quattro models

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet orientation, and vehicle equipment before installation. This radiator uses quick-connect inlet and outlet pipe connections and is designed for the listed cross flow applications. Transfer or inspect related cooling system components, and confirm the cooling fan, hoses, and thermostat are in proper condition before returning the vehicle to service. Fitment includes 2012-2018 Volkswagen Passat, 2006-2010 Volkswagen Passat, 2013-2017 Volkswagen CC, 2010-2014 Volkswagen Golf with Warm Climate Option, 2013-2014 Volkswagen Jetta, 2009-2012 Volkswagen Jetta with Warm Climate Option, 2009-2012 Volkswagen Passat CC, 2006-2009 Audi A3 Quattro, 2008-2009 Audi TT Quattro, and 2007-2008 Volkswagen Eos.

Quality Assurance

CSF manufactures radiators in ISO/TSO-certified facilities and validates cooling performance through laboratory testing, including wind tunnel evaluation. The brand has supplied radiators worldwide for decades and offers a broad catalog of applications across major vehicle platforms.