CSF Lexus GX470 / 4th Gen Toyota 4Runner V8 Heavy-Duty All-Aluminum Radiator

The CSF Lexus GX470 / 4th Gen Toyota 4Runner V8 Heavy-Duty All-Aluminum Radiator represents a significant advancement in cooling system technology for these iconic SUVs. Renowned for the reliability of the 2UZ-FE V8 engine, which also powers the Land Cruiser, Tundra, and Sequoia, these vehicles demand a cooling solution that matches the engine’s durability and performance. While the original equipment manufacturer (OEM) radiator performs adequately under standard conditions, it exhibits limitations, especially as these vehicles age and accumulate mileage. Recognizing this, CSF has engineered a premium replacement radiator that not only meets but exceeds OEM standards, ensuring enhanced cooling efficiency and long-term reliability. The radiator features a robust 2-row, 42mm aluminum core that significantly increases fluid capacity and optimizes heat dissipation. This design improvement is critical for maintaining optimal engine temperatures during demanding driving conditions. CSF’s proprietary B-Tube Technology enhances heat transfer efficiency by approximately 15% compared to conventional oval welded tubes, contributing to superior thermal management. The core is further optimized with multi-louvered fins that maximize airflow, facilitating rapid heat exchange and consistent engine performance. Constructed entirely from high-grade aluminum, the radiator’s end tanks are TIG welded to the core, delivering exceptional structural integrity and durability. This contrasts sharply with the OEM’s crimped plastic end tanks, which are prone to failure and represent a common weak point. The all-aluminum construction not only improves strength but also ensures resistance to corrosion and wear, extending the radiator’s service life. Installation is streamlined through a true plug-and-play, drop-in fit design requiring no modifications, trimming, or cutting. This facilitates a hassle-free upgrade experience for technicians and vehicle owners alike. To further enhance installation quality, CSF includes pre-cut double-sided adhesive foam strips that seal the fan shroud against the radiator, improving airflow efficiency and cooling performance. In addition to its core cooling capabilities, the radiator integrates a heavy-duty, high-performance 5-plate transmission oil cooler within the right side tank. This built-in cooler connects seamlessly to OEM hoses and is engineered to handle the increased thermal load associated with towing, low gear crawling, and the use of oversized tires. Oversized tires effectively reduce the gear ratio, imposing additional strain on the engine and transmission, which in turn generates excess heat. The CSF radiator’s enhanced cooling capacity addresses these challenges, ensuring reliable operation under increased mechanical stress. Features 2-Row – 42mm Ultra-High-Performance Core for superior heat dissipation Cooling Tubes featuring CSF’s Exclusive B-Tube Technology for approximately 15% improved heat transfer 6.5mm Tall Ultra Efficient Multi-Louvered Fins maximizing surface area contact and airflow CNC Machined Mounting Brackets and OEM Style Inlet/Outlet ensuring precise fitment Integrated Heavy-Duty High-Performance 5 Plate Transmission Oil Cooler located in the right side tank 100% All Aluminum Construction with TIG Welding for enhanced durability and corrosion resistance Smooth Satin Finish providing a professional appearance and additional protection True Plug-and-Play “Drop-in Fit” Installation requiring no modifications or trimming Individually Leak and Pressure Tested to guarantee reliability and performance 2-Year Limited Warranty offering peace of mind and product assurance Applications Year Range Make Chassis Code Model Trim Engine / Trans / Etc Notes 2003-2009 Lexus J120 GX470 – 4.7L V8 – 2003-2009 Toyota 4th Gen 4Runner Limited 4.7L V8 (Automatic) – 2003-2009 Toyota 4th Gen 4Runner Sport 4.7L V8 (Automatic) – 2003-2009 Toyota 4th Gen 4Runner SR5 4.7L V8 (Automatic) – OEM Part Numbers Lexus: 16400 50313 Lexus: 16400-50313 Lexus: 1640050313 Toyota: 16400 50300 Toyota: 16400-50300 Toyota: 1640050300 Warranty Cooling Systems and Flexibles, Inc. (CSF) provides a comprehensive warranty on its High-Performance Cooling Systems, applicable under normal use and service conditions to the original purchaser of the vehicle in which the product was installed. This warranty underscores CSF’s commitment to quality and customer satisfaction. For detailed information regarding warranty terms and conditions, please consult our Warranty Page. SKU# 7215 Warranty Term: 2 years In summary, the CSF Heavy-Duty All-Aluminum Radiator for the Lexus GX470 and 4th Gen Toyota 4Runner V8 is engineered to deliver superior cooling performance, enhanced durability, and ease of installation. It