CSF 3450 Radiator

CSF 3450 Aluminum Radiator Overview

The CSF 3450 is a 1 row all aluminum radiator built for OE-style replacement in select BMW applications. With an aluminum core and aluminum tanks, it is engineered for direct-fit cooling performance in vehicles such as the BMW 525i, 530i, 545i, 550i, 650i, 750i, 750Li, and 528i xDrive.

CSF designs and validates its radiators using performance-focused engineering methods, including lab testing for cooling performance. The 3450 follows an OEM-style all aluminum tank and core layout for a clean replacement solution.

Key Features

• Part number: 3450
• 1 row all aluminum construction
• Aluminum core and aluminum tanks
• Cross flow radiator design
• Core thickness: 1 1/4 in.
• Core dimensions: 19 in. wide x 23 5/8 in. long
• Inlet: 1 1/2 in. left
• Outlet: 1 1/2 in. right
• OEM-style all aluminum tank and core model
• Cap not included

Detailed Description

CSF 3450 is built as a direct OE-style radiator replacement with an all aluminum core and tank design. The cross flow layout, 1 row core, and measured inlet and outlet placement support proper routing in the intended BMW cooling system. This radiator is a practical choice for drivers searching for a BMW 530i radiator replacement, BMW 545i cooling system repair part, or a CSF 3450 radiator for BMW 750Li and related models.

CSF manufactures a broad range of radiators for major vehicle platforms and uses engineering validation to confirm cooling performance. The 3450 reflects that approach with a design focused on fit, material consistency, and thermal efficiency.

This part cross-references Spectra Premium CU2825 and Anchor 2825 for the same application.

What It Helps Address

• Overheating caused by a worn or leaking radiator
• Coolant loss from cracked tanks or core damage
• Reduced cooling efficiency in aging BMW cooling systems
• Fitment issues from non-OE-style replacement radiators
• Corrosion concerns associated with mixed-material cooling components

Installation Notes and Tips

Verify inlet and outlet orientation before installation: inlet is on the left and outlet is on the right. Confirm radiator dimensions and OE-style mounting points against the vehicle before removal of the original unit. Transfer any required cooling system components from the existing setup as needed, and inspect hoses, clamps, and related cooling parts for wear while the system is open.

Compatible With 2004-2005 BMW 525i, N/A; 2004-2007 BMW 530i, N/A; 2004-2005 BMW 545i, N/A; 2006-2010 BMW 550i, N/A; 2006-2010 BMW 650i, N/A; 2007-2008 BMW 750i, N/A; 2007-2008 BMW 750Li, N/A; 2009-2010 BMW 528i xDrive, N/A.

Quality Assurance

CSF radiators are manufactured to high-performance standards and produced in ISO/TSO-certified facilities. The brand reports more than 50 years of radiator production experience and extensive global application coverage across thousands of models.