Denso 221-9387 Radiator

Overview of the Denso Radiator for Lexus RX330

The Denso radiator part number 221-9387 is designed specifically for the Lexus RX330, providing reliable cooling performance. This radiator includes a transmission oil cooler, ensuring efficient heat dissipation for both engine and transmission systems.

• Core Height: 26.38 inches
• Core Width: 20.13 inches
• Core Thickness: 0.87 inches
• Inlet Diameter: 1.5 inches
• Outlet Diameter: 1.34 inches
• Includes Transmission Oil Cooler

Detailed Product Description

The Denso 221-9387 radiator is engineered with precise core dimensions to fit the Lexus RX330 cooling system requirements. The core height of 26.38 inches and width of 20.13 inches provide an optimal surface area for heat exchange, while the 0.87-inch core thickness balances cooling efficiency with compact design. The radiator features a 1.5-inch inlet and a 1.34-inch outlet diameter, matching OEM specifications for seamless integration. Additionally, the built-in transmission oil cooler supports the vehicle’s transmission by maintaining proper fluid temperature, which is critical for transmission longevity and performance.

Common Applications and Issues Addressed

• Overheating engine due to radiator failure
• Transmission fluid overheating impacting shifting performance
• Coolant leaks from damaged or corroded radiator cores
• Reduced cooling efficiency from clogged or worn radiators
• Maintaining proper engine and transmission operating temperatures

Installation Notes and Tips

When installing the Denso 221-9387 radiator on a Lexus RX330, ensure all hose connections match the specified inlet and outlet diameters (1.5 inches and 1.34 inches respectively). Properly flush the cooling system before installation to prevent contamination. Verify that the transmission oil cooler lines are securely connected to avoid leaks. It is recommended to inspect and replace radiator hoses and clamps during installation for optimal performance.

Quality Assurance and Warranty

Denso radiators are manufactured to meet or exceed OEM standards, ensuring durability and reliable cooling performance. The 221-9387 radiator undergoes rigorous quality control testing to verify fitment and function for the Lexus RX330. Warranty coverage details should be confirmed with the point of purchase, as Denso typically offers limited warranties covering defects in materials and workmanship.