CSF 3452 Radiator
OE Quality 60-Day Returns
CSF
 1 Row Plastic Tank Aluminum Core

CSF 3452 Radiator

Brand CSF 3452
Core Thickness 1 1/4
Core Width 16 7/8
Core Material Aluminum
Tank Material Plastic
Core Length 24 15/16
Inlet Diameter 1 1/4 left
Outlet Diameter 1 5/16 right
Down Flow Or Cross Flow Type Cross flow
Radiator Core Row Quantity 1
Cap Included No
Box Height (in) 6 5/8
Box Length (in) 32
Box Weight (lbs) 11
Box Width (in) 20 13/16
Hazardous Material No
Inlet Length (in) 17 11/16
Inlet Width (in) 1 5/8
Oil Cooler (in) 11 13/16 (high-efficiency plate type)
Outlet Length (in) 17 11/16
Outlet Width (in) 1 5/8
Tech Note O.e.m. style plastic tanks & aluminum core;with quick-connect inl
Product line 1 Row Plastic Tank Aluminum Core
Fits Audi · 24 vehicles

OE-style replacement. Plastic tanks and an aluminum core match the original design.

Cross-flow design. Promotes efficient coolant flow for consistent heat transfer.

Quick-connect pipes. Simplify hose attachment for a cleaner installation.

Cross-references AP Exhaust 2590, APDI 8012590 and Spectra Premium CU2590 for the same application. See all 8.

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CSF 3452 Radiator for Audi A4 and A6

CSF 3452 is an OE-style radiator built with a plastic tank and aluminum core for select Audi applications. It is engineered as a cross-flow unit with quick-connect inlet and outlet pipe connections, making it a direct-fit cooling system replacement for covered A4, A4 Quattro, A6, and A6 Quattro models.

Key Features

  • Brand: CSF
  • Part number: 3452
  • 1-row radiator design
  • Plastic tank and aluminum core construction
  • Cross-flow configuration
  • Core thickness: 1 1/4 in.
  • Core width: 16 7/8 in.
  • Core length: 24 15/16 in.
  • Inlet diameter: 1 1/4 in., left
  • Outlet diameter: 1 5/16 in., right
  • Tech note: O.E.M. style plastic tanks with aluminum core and quick-connect inlet and outlet pipe

Product Details

CSF builds radiators to high-performance manufacturing standards and validates cooling performance through laboratory wind-tunnel testing. The CSF 3452 follows an OE-style layout with plastic end tanks and an aluminum core, sized for the listed Audi fitments. This radiator is designed for drivers replacing a worn or leaking cooling unit on a 2002-2008 Audi A4, 2002-2009 Audi A4 Quattro, 2002-2004 Audi A6, or 2002-2004 Audi A6 Quattro. This part cross-references Spectra Premium CU2590 for the same application.

What This Radiator Helps Address

  • Coolant leaks from cracked or aged radiator tanks
  • Restricted coolant flow caused by internal buildup
  • Overheating from reduced heat transfer efficiency
  • Damaged inlet or outlet connections
  • Cooling system service needs on Audi A4, Audi A4 Quattro, Audi A6, and Audi A6 Quattro models

Installation Notes and Tips

Verify the inlet and outlet orientation before installation: inlet is left and outlet is right. Confirm the OE-style quick-connect pipe design and compare the included O-ring dimensions against the original radiator connections. Inspect hoses, clamps, and coolant condition during replacement, and bleed the cooling system according to Audi service procedures after installation.

Quality Assurance

CSF manufactures radiators in ISO/TSO-certified facilities and has supplied cooling products worldwide for decades. The brand reports more than 30 million radiators sold and uses engineering validation methods to support fit and cooling performance. Part number 3452 is built to match the listed OE-style application requirements for Audi cooling system service.

Related reading

This part fits 24 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2009AudiA4 Quattro3.2LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2008AudiA43.2LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2008AudiA4 Quattro3.2LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2007AudiA43.2LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2007AudiA4 Quattro3.2LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2006AudiA43.2LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2006AudiA4 Quattro3.2LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2006AudiA4 Quattro3.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2005AudiA43.2LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2005AudiA43.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2005AudiA4 Quattro3.2LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2005AudiA4 Quattro3.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2004AudiA43.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2004AudiA4 Quattro3.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2004AudiA63.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2004AudiA6 Quattro3.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2003AudiA43.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2003AudiA4 Quattro3.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2003AudiA63.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2003AudiA6 Quattro3.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2002AudiA43.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2002AudiA4 Quattro3.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2002AudiA63.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
2002AudiA6 Quattro3.0LV6N/AOE Style Design; Includes O-Ring OD 39.3 x ID 30.8 x 4.25mm & O-Ring OD 29 x ID 22 x 3.5mm; 1 Row Plastic Tank Aluminum Core
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 2590APDI — 8012590Spectra Premium — CU25908E0 121 251 AR8E0 121 251 AS8E0 121 251 M8E0 121 251 SAU3010130