CSF 3821 Radiator

Overview of CSF 2 Row Plastic Tank Aluminum Core Radiator

The CSF 2 Row Plastic Tank Aluminum Core Radiator, part number 3821, is engineered for reliable cooling performance in Lexus and Toyota vehicles. Designed specifically for the Land Cruiser and LX570 models, this radiator combines durable materials with precise dimensions to ensure optimal fit and function.

• Core thickness: 2 1/16 inches
• Core width: 27 1/2 inches
• Core length: 23 1/4 inches
• Aluminum core with plastic tanks
• Down flow design with 2 core rows
• Inlet diameter: 1 1/2 inches (left side)
• Outlet diameter: 1 11/16 inches (right side)
• Includes high-efficiency plate type oil cooler (15 3/8 inches)
• Cap not included (CSF cap number 4514 compatible)

Details on the 2 Row Plastic Tank Aluminum Core Product Line

The CSF 2 Row Plastic Tank Aluminum Core product line features radiators constructed with an aluminum core for effective heat dissipation and plastic tanks designed to match original equipment manufacturer (OEM) specifications. This combination provides a balance of durability and weight savings, making it suitable for heavy-duty applications such as the Lexus Land Cruiser and Toyota LX570. The down flow design supports efficient coolant circulation, while the two-row core enhances cooling capacity without excessive bulk.

Technical Specifications and Features

This radiator’s core measures 2 1/16 inches thick, 27 1/2 inches wide, and 23 1/4 inches long, providing a substantial surface area for heat exchange. The aluminum core material offers corrosion resistance and thermal conductivity, while the plastic tanks reduce weight and resist impact damage. The inlet and outlet diameters are sized at 1 1/2 inches (left) and 1 11/16 inches (right), respectively, ensuring compatibility with factory hose connections. The integrated oil cooler is a high-efficiency plate type measuring 15 3/8 inches, supporting engine oil temperature regulation alongside coolant management.

Compatible Vehicles and Common Applications

• Replacement radiator for Lexus Land Cruiser models
• Replacement radiator for Toyota LX570 models
• Addresses overheating issues due to radiator core damage or clogging
• Resolves coolant leaks from cracked or worn plastic tanks
• Improves cooling system efficiency in vehicles with OEM radiator failure

Installation Notes and Tips

When installing the CSF radiator part number 3821, ensure the radiator cap is compatible with CSF cap number 4514, as the cap is not included. Verify hose connections match the inlet and outlet diameters (1 1/2 inch left inlet, 1 11/16 inch right outlet) for proper fitment. The down flow design requires correct orientation during installation to maintain coolant flow direction. Inspect mounting points and brackets for secure attachment and avoid damage to the plastic tanks during handling.

Quality Assurance and Warranty

CSF radiators are manufactured to meet OEM standards, using high-quality aluminum cores and durable plastic tanks. This radiator is free from hazardous materials and designed for long-term service in demanding automotive environments. While specific warranty details are not provided here, CSF products typically come with manufacturer-backed warranties covering defects in materials and workmanship.