Denso 221-0503 Radiator

Denso Radiator for Toyota and Lexus Applications

The Denso 221-0503 radiator is built for direct-fit cooling performance in select Toyota and Lexus vehicles. It combines OE-style dimensions with an integrated transmission oil cooler to support stable engine temperatures and dependable heat exchange.

• OE-style radiator construction from Denso
• Core dimensions: 15.6870 in. height, 29.0000 in. width, 0.6250 in. thickness
• Inlet and outlet diameter: 0.9370 in.
• Transmission oil cooler included
• Built to OE manufacturer standards for fitment and function
• Durability and function tested before release

OE Fitment and Application Details

This radiator is engineered for select 2002-2008 Toyota and Lexus cooling system applications, including Fits 2004-2008 Toyota Solara, N/A; Fits 2004-2006 Lexus ES330, N/A; Fits 2002-2006 Toyota Camry, N/A; and Fits 2002-2003 Lexus ES300, N/A. It is a strong match for drivers searching for a radiator for 2002-2006 Toyota Camry without tow package or a replacement radiator for 2004-2006 Lexus ES330 without tow package. Part number 221-0503 is also referenced in OE-style replacement searches for these vehicles.

Denso’s OE supply experience is reflected in the radiator’s tank design, fin pitch, core sizing, and material selection. The result is a radiator built to support consistent cooling performance and proper fit in the listed Toyota Camry, Toyota Solara, Lexus ES330, and Lexus ES300 applications. This part cross-references Spectra Premium (e.g., CU2434) for the same application.

Common Problems This Radiator Can Address

• Overheating caused by a leaking or restricted radiator
• Coolant loss from cracked tanks or aged core materials
• Poor heat transfer from a clogged or inefficient radiator
• Transmission fluid temperature concerns when the cooler circuit is part of the radiator
• Fitment issues from non-OE-style replacement parts

Installation Notes and Tips

Verify vehicle configuration before ordering, especially tow package status, since the listed Lexus ES330 and Toyota Camry applications are for models without Tow Package. Confirm inlet and outlet hose sizing, transmission cooler line routing, and mounting points before installation. Flush the cooling system, inspect hoses and clamps, and refill with the correct coolant mixture after installation.

Quality Assurance

Denso radiators are produced using OE-level engineering standards and undergo durability and function testing to help ensure reliable operation under demanding conditions. The 221-0503 is built to deliver consistent cooling performance and fitment for the specified Toyota and Lexus applications.