Denso 221-3242 Radiator

Denso 221-3242 Radiator for Acura TL

The Denso 221-3242 radiator is built for 2009-2011 Acura TL applications and matches OE-style cooling requirements for proper engine temperature control. With core dimensions of 16.7500 in. height, 30.1870 in. width, and 1.0600 in. thickness, this radiator is sized for direct-fit replacement service.

It also includes an integrated transmission oil cooler and 1.2500 in. inlet and outlet diameters, making it a practical choice for Acura TL radiator replacement when the original unit is leaking, restricted, or no longer maintaining stable coolant flow.

Key Features

• Fits 2009-2011 Acura TL
• Part number 221-3242
• Core height: 16.7500 in.
• Core width: 30.1870 in.
• Core thickness: 1.0600 in.
• Transmission oil cooler included
• Inlet diameter: 1.2500 in.
• Outlet diameter: 1.2500 in.

OE-Style Cooling Performance

Denso supplies radiators to original equipment vehicle manufacturers, and this 221-3242 radiator reflects that OE engineering focus in its configuration, tank design, fin pitch, core sizing, and material selection. It is built to meet strict durability and function standards so the cooling system can maintain consistent performance under demanding driving conditions. For Acura TL owners searching for a direct replacement radiator, this unit supports dependable engine cooling and transmission fluid heat management in one assembly.

This part cross-references Acura 19010-RK1-A52 for the same application.

Common Problems This Radiator Can Address

• Coolant leaks from a cracked or corroded radiator
• Overheating caused by restricted coolant flow
• Transmission fluid temperature issues tied to a failing cooler circuit
• Reduced cooling efficiency from damaged fins or internal blockage
• Replacement needs after impact damage to the front cooling stack

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet size, and transmission cooler connections before installation. Flush the cooling system, inspect hoses and clamps, and check the fan assembly, thermostat, and coolant condition while replacing the radiator. After installation, refill with the correct coolant mixture and bleed air from the system to help prevent hot spots and temperature fluctuations.

Quality Assurance

Denso radiators are engineered from OE experience and undergo durability and function testing before release. The 221-3242 is built to deliver reliable fitment and cooling performance for 2009-2011 Acura TL models.