CSF 3687 Radiator

Overview of CSF 3687 Radiator for Lexus and Toyota Vehicles

The CSF 3687 radiator is designed specifically for select Lexus and Toyota models, including the RX350, RX450h, and Sienna. This radiator features a durable aluminum core combined with plastic tanks, engineered to provide reliable cooling performance for your vehicle's engine.

• Core thickness: 7/8 inch
• Core width: 29 15/16 inches
• Core length: 17 11/16 inches
• Aluminum core with plastic tanks
• Down flow design with 1 row core
• Inlet and outlet diameter: 1 3/8 inches (left inlet, right outlet)
• Compatible with Lexus RX350, RX450h, and Toyota Sienna
• Part number: 3687

Detailed Product Description

The CSF 3687 radiator is part of the 1 Row Plastic Tank Aluminum Core product line, which combines the strength and heat dissipation properties of an aluminum core with the lightweight and corrosion-resistant benefits of plastic tanks. This radiator features a single-row core with a thickness of 7/8 inch, measuring nearly 30 inches in width and over 17 inches in length, optimized for efficient heat exchange. The down flow design ensures coolant flows from top to bottom, supporting effective engine temperature regulation. Both the inlet and outlet have a diameter of 1 3/8 inches, positioned on the left and right sides respectively, facilitating straightforward hose connections. This radiator does not include a cap but is compatible with CSF cap number 4514.

Applications and Common Issues Addressed

• Replacement for leaking or damaged radiators in Lexus RX350 and RX450h models
• Cooling system upgrade for Toyota Sienna vehicles experiencing overheating
• Resolution of coolant flow restrictions due to clogged or corroded radiator cores
• Addressing plastic tank failures common in older radiators
• Improving engine cooling efficiency in vehicles with OEM-style radiator requirements

Installation Notes and Tips

• Ensure compatibility with Lexus RX350, RX450h, or Toyota Sienna before installation
• Verify inlet and outlet hose diameters match existing connections (1 3/8 inches)
• Use appropriate coolant and follow manufacturer torque specifications for mounting
• Inspect and replace radiator cap with CSF cap number 4514 if necessary
• Check for proper coolant flow direction due to down flow design

Quality Assurance and Warranty Information

CSF radiators are manufactured to meet OEM specifications, using high-quality aluminum cores and durable plastic tanks to ensure long-lasting performance. The 3687 radiator is designed without hazardous materials and undergoes rigorous quality control. While specific warranty details are not provided here, CSF products typically come with a limited warranty covering defects in materials and workmanship. Consult the product documentation or CSF directly for exact warranty terms.