Denso 221-9571 Radiator

Overview of the Denso Radiator 221-9571 for Lexus RX Models

The Denso Radiator 221-9571 is engineered specifically for Lexus RX350, RX350L, and RX450h models. Designed to maintain optimal engine temperature, this radiator includes a transmission oil cooler to support both engine and transmission cooling needs.

• Core Height: 19.6460 inches
• Core Width: 29.4090 inches
• Core Thickness: 1.0240 inches
• Inlet Diameter: 1.3580 inches
• Outlet Diameter: 1.3580 inches
• Includes Transmission Oil Cooler

Detailed Product Description

This Denso Radiator from the Radiator product line is designed with precise core dimensions to ensure efficient heat dissipation for Lexus RX350, RX350L, and RX450h vehicles. The core height of 19.6460 inches and width of 29.4090 inches provide a substantial surface area for cooling, while the 1.0240-inch core thickness supports effective coolant flow. Both the inlet and outlet diameters measure 1.3580 inches, matching OEM specifications for seamless integration. The inclusion of a transmission oil cooler enhances the radiator’s functionality by providing additional cooling for the transmission fluid, which is critical for maintaining transmission performance and longevity.

Common Applications and Problem Resolution

• Overheating issues in Lexus RX350, RX350L, and RX450h models
• Coolant leaks or radiator core damage
• Transmission fluid overheating due to lack of integrated cooling
• Reduced engine cooling efficiency from worn or damaged radiators
• Replacement for OEM radiator failures or upgrades

Installation Notes and Tips

When installing the Denso Radiator 221-9571, ensure compatibility with Lexus RX350, RX350L, and RX450h models by verifying part number and dimensions. Properly connect the inlet and outlet hoses to the 1.3580-inch diameter fittings to prevent leaks. Take care to flush the cooling system before installation to remove debris and contaminants. Confirm that the transmission oil cooler lines are securely attached to maintain transmission cooling efficiency.

Quality Assurance and Warranty

Denso Radiators are manufactured to meet strict quality standards, ensuring durability and reliable performance. This radiator is part of the Denso Radiator product line, known for precision engineering and OEM-level fitment. While specific warranty details are not provided here, Denso typically offers coverage against manufacturing defects. Consult the product documentation or supplier for exact warranty terms.