CSF 3943 Radiator

Reliable Radiator Replacement for Lexus and Toyota Vehicles

The CSF radiator part number 3943 is designed specifically for select Lexus and Toyota models, including the Corolla, Prius, Prius Prime, UX250h, and UX300h. Engineered with an aluminum core and plastic tanks, this radiator offers efficient cooling performance tailored to your vehicle's needs.

Key Features of CSF Radiator 3943

• Core thickness: 5/8 inch for optimal heat dissipation
• Core dimensions: 14 5/16 inches width by 26 9/16 inches length
• Constructed with a durable aluminum core and plastic tanks
• Cross flow design enhances coolant flow and cooling efficiency
• Inlet and outlet diameters both 1 3/8 inches, inlet on right, outlet on left
• Single-row core configuration for reliable performance
• Compact box dimensions: 33 3/16 inches length, 19 3/16 inches width, 6 7/8 inches height
• Lightweight design at 8 pounds for easier handling

Detailed Description of CSF Radiator 3943

This radiator features an OEM-style plastic tank combined with a high-quality aluminum core, providing a balance of durability and efficient heat transfer. The cross flow design allows coolant to move horizontally across the core, improving cooling capacity and maintaining optimal engine temperatures. With inlet and outlet diameters of 1 3/8 inches positioned on opposite sides, this radiator fits seamlessly into the cooling system of compatible Lexus and Toyota models. The single-row core thickness of 5/8 inch supports effective heat exchange while maintaining a compact profile.

Common Applications and Issues Addressed

• Replacement for leaking or cracked radiators in Lexus Corolla and Toyota Prius models
• Resolves overheating problems caused by clogged or damaged cores
• Restores proper coolant flow in vehicles with compromised radiator tanks
• Addresses coolant leaks from worn or deteriorated plastic tanks
• Improves engine cooling efficiency in hybrid models like Prius Prime and UX250h

Installation Notes and Tips

Ensure the radiator is compatible with your specific Lexus or Toyota model before installation. Properly drain the coolant system and disconnect all hoses and fittings carefully. Verify inlet and outlet hose diameters match the radiator’s 1 3/8 inch connections. Inspect and replace any worn clamps or hoses during installation to prevent leaks. After installation, refill the cooling system with the recommended coolant and bleed air pockets to maintain optimal performance.

Quality Assurance and Warranty Information

The CSF radiator 3943 is manufactured to meet OEM specifications, ensuring reliable fit and function for Lexus and Toyota vehicles. Constructed with corrosion-resistant aluminum and durable plastic tanks, this radiator is designed for long-term service. While specific warranty details are not provided, CSF products typically adhere to industry standards for quality and durability.