CSF 3636 Radiator

CSF 3636 Radiator for Lexus RX350

CSF 3636 is an OE-style radiator built with a plastic tank and aluminum core layout for controlled cooling performance and direct replacement fitment. It is engineered for the 2007-2009 Lexus RX350 and uses a cross-flow design with left-side inlet and right-side outlet routing.

Key Features

• OE-style plastic tank and aluminum core construction
• 1-row core design for factory-style cooling layout
• Cross-flow configuration
• Core thickness: 7/8 in.
• Core dimensions: 19 in. wide x 26 9/16 in. long
• Inlet diameter: 1 1/2 in. left
• Outlet diameter: 1 1/2 in. right
• Integrated high-efficiency plate-type oil cooler: 13 3/4 in.
• Cap not included

Product Details

CSF 3636 is part of CSF’s 1 Row Plastic Tank Aluminum Core line, a product line focused on OE-style radiator construction for vehicles that require factory-matched fitment and cooling layout. CSF manufactures radiators to high-performance standards and validates cooling performance through lab testing, with broad manufacturing coverage across many vehicle applications. This radiator is a direct-fit cooling replacement for the Lexus RX350 and is identified by part number 3636.

Compatible with 2007-2009 Lexus RX350, this radiator is designed for the factory-style cross-flow arrangement and the specified inlet and outlet locations. This part cross-references Bosch 13019 for the same application.

Common Cooling Issues It May Address

• Leaking or cracked radiator tanks
• Restricted coolant flow from an aging core
• Overheating caused by reduced heat transfer
• Corrosion or wear in an original radiator assembly
• Cooling system service on a 2007-2009 Lexus RX350

Installation Notes and Tips

Verify inlet and outlet orientation, core dimensions, and oil cooler routing before installation. Transfer any required vehicle-specific components from the original setup if applicable, and inspect hoses, clamps, and coolant condition while the cooling system is open. Confirm that the radiator cap specification matches the vehicle requirement, since a cap is not included.

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 has supplied radiators worldwide for more than 50 years and offers a broad catalog of applications across major vehicle brands.