CSF 3942 Radiator

OE-Style Radiator for Toyota Corolla and Lexus UX200

The CSF 3942 radiator is built for 2020-2022 Toyota Corolla and 2020-2022 Lexus UX200 applications that require an OE-style plastic tank and aluminum core design. It uses a cross-flow layout with a single-row core and upgraded B-tube construction for improved cooling performance and durability.

Key Features

• OE-style radiator with plastic tanks and aluminum core
• Cross-flow design for efficient coolant routing
• Core thickness: 5/8 in.
• Core dimensions: 26 9/16 in. length x 14 5/16 in. width
• 1 3/8 in. inlet on the left and 1 3/8 in. outlet on the right
• Single-row construction with upgraded stronger B-tube design
• Engineered and wind tunnel tested for cooling performance validation
• CSF part number 3942

Detailed Description

CSF 3942 is a direct-fit radiator designed for modern compact Toyota and Lexus cooling systems. The aluminum core and plastic tank construction follows an OE-style layout while the upgraded B-tube core design adds strength and thermal efficiency. This radiator is built for 2020-2022 Toyota Corolla and 2020-2022 Lexus UX200 models, making it a focused replacement for vehicles that need reliable heat transfer and consistent coolant flow. CSF manufactures radiators to high-performance standards and validates designs through laboratory wind tunnel testing. Part number 3942 is also cross-referenced to Quality-Built 13955 for the same application.

Common Cooling Issues This Radiator Addresses

• Cracked or leaking radiator tanks
• Restricted coolant flow from an aging core
• Overheating caused by reduced heat dissipation
• Corrosion or fatigue in an original radiator assembly
• Cooling system performance loss in daily driving conditions

Installation Notes and Tips

Verify inlet and outlet orientation before installation: this unit uses a left-side inlet and right-side outlet. Confirm radiator dimensions and hose routing against the original part before removal. Inspect the cooling system, hoses, cap, and coolant condition during replacement to help prevent repeat failures. This radiator does not include a radiator cap.

Quality Assurance

CSF radiators are manufactured in ISO/TSO-certified facilities and are designed for validated cooling performance. The brand has supplied radiators worldwide for decades and produces a broad range of applications for leading vehicle platforms. Part number 3942 is built to meet the demands of OE-style replacement on Toyota Corolla and Lexus UX200 cooling systems.