CSF 3361 Radiator

OE-Style Cooling Replacement for Audi and Volkswagen

The CSF 3361 radiator is an OE-style replacement built with a 1-row aluminum core and plastic tanks for select Audi and Volkswagen applications. It is engineered for direct-fit cooling performance in vehicles such as the Audi A4, Audi A4 Quattro, Audi A6, Audi A6 Quattro, and Volkswagen Passat.

CSF manufactures radiators to high-performance standards, with production backed by ISO/TSO-certified factories and validation testing focused on cooling efficiency. The CSF 3361 uses a cross-flow design with quick-connect inlet and outlet pipes for a factory-style service replacement.

Key Features

• 1-row aluminum core with plastic tanks
• Cross-flow radiator design
• Core thickness: 1 1/4 in.
• Core width: 15 11/16 in.; core length: 24 13/16 in.
• Inlet diameter: 1 1/4 left; outlet diameter: 1 1/4 right
• O.E.M.-style plastic tanks and aluminum core construction
• Steel crimps used to strengthen the radiator assembly
• High-efficiency plate-type oil cooler section

Detailed Description

CSF part number 3361 is designed for drivers replacing a worn or leaking radiator in 1996-2001 Audi A4, 1996-2001 Audi A4 Quattro, 1998-2001 Audi A6, 1998-2001 Audi A6 Quattro, and 1998-2005 Volkswagen Passat models. The OE-style layout helps maintain factory routing and fitment, while the aluminum core supports efficient heat transfer and the plastic tank construction matches the original-style design used in these vehicles. This part cross-references Spectra Premium CU2648 for the same application.

CSF has supplied radiators worldwide for decades and manufactures a broad range of cooling products for many vehicle platforms. The 3361 reflects that experience with a direct-fit configuration intended for routine radiator replacement on Audi A4, Audi A6, and Volkswagen Passat cooling systems.

Common Problems This Radiator Can Address

• Coolant leaks from cracked or aged radiator tanks
• Restricted cooling performance from a clogged or corroded core
• Overheating caused by reduced heat dissipation
• Damaged inlet or outlet connections
• Service replacement after radiator failure on Audi A4, Audi A6, or Volkswagen Passat models

Installation Notes and Tips

Verify inlet and outlet orientation before installation: inlet is on the left and outlet is on the right. This radiator uses quick-connect inlet and outlet pipe connections and does not include a cap. Confirm vehicle-specific fitment for your exact Audi A4, Audi A4 Quattro, Audi A6, Audi A6 Quattro, or Volkswagen Passat year before installation.

Quality Assurance

CSF radiators are produced in ISO/TSO-certified factories and are engineered with cooling performance validation in mind. The brand’s manufacturing experience and OE-style construction support consistent replacement quality for the CSF 3361 radiator.