CSF 3356 Radiator

CSF 3356 High Performance Radiator

CSF 3356 is a direct-fit radiator built with an aluminum core and OE-style plastic tanks for Subaru and Saab applications. It is engineered for down-flow cooling layouts and designed around the factory-style dimensions needed for a proper replacement in the engine bay.

The CSF 1 Row Plastic Tank Aluminum Core High Performance line focuses on OE-style fitment with upgraded construction details. For this radiator, that includes steel crimps for added strength and a design validated through laboratory wind-tunnel testing for cooling performance.

• Aluminum core with plastic tanks
• 1-row, down-flow radiator design
• Core thickness: 7/8 in.
• Core width: 27 1/16 in.; core length: 13 3/8 in.
• Inlet diameter: 1 9/16 in. center; outlet diameter: 1 9/16 in. left
• OE-style plastic tank and aluminum core construction
• Steel crimps strengthen the radiator by 40% over OE, per manufacturer tech note
• No radiator cap included

Fitment Coverage

• Fits 2002-2007 Subaru Impreza, N/A, OE style design with Mini 16 psi cap.
• Fits 2005-2006 Saab 9-2X, N/A.
• Fits 2005 Subaru Baja, N/A, OE Style Design; Use Mini, 16 psi Cap; w/o Sportshift Transmission.
• Fits 2002-2005 Subaru Impreza, N/A, OE Style Design; Use Mini, 16 psi Cap; w/ Filler Neck.
• Fits 2002-2004 Subaru Impreza, N/A, OE Style Design; Use Mini, 16 psi Cap; Sport Wagon.

Detailed Description

CSF part number 3356 is built for drivers replacing a worn or leaking radiator in Subaru Impreza, Subaru Baja, or Saab 9-2X applications. The radiator uses an aluminum core with plastic tanks in an OE-style layout, making it a practical choice when the factory cooling system needs a direct replacement that matches the original configuration. This CSF 3356 radiator is also listed with a high-efficiency concentric-type oil cooler section measuring 14 3/4 in., along with inlet and outlet dimensions that align with the specified fitment.

CSF manufactures radiators for a wide range of vehicle applications and states that its products are engineered to high-performance standards and validated in laboratory testing. This part cross-references Spectra Premium CU2703 and APDI 8012703 for the same application.

Common Problems This Radiator Can Address

• Coolant leaks from cracked or aged plastic tanks
• Reduced cooling efficiency from a clogged or damaged core
• Overheating caused by internal corrosion or restricted flow
• Fitment issues when replacing an OE-style Subaru or Saab radiator
• Cooling system wear in high-mileage Impreza, Baja, or 9-2X vehicles

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet locations, and transmission-related notes before installation. This radiator is specified for OE-style applications that use a Mini 16 psi cap in several fitments, and the product does not include a cap. Confirm the vehicle configuration against the fitment notes for Subaru Impreza, Subaru Baja, and Saab 9-2X models before ordering.

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. The brand also reports more than 50 years of production experience and over 30 million radiators sold worldwide.