Denso 221-3159 Radiator

Denso Radiator for Toyota Corolla and Matrix

The Denso 221-3159 radiator is built for direct-fit cooling performance in select Toyota applications. It combines OE-style dimensions with an integrated transmission oil cooler and inlet/outlet sizing that supports proper coolant flow and heat transfer.

• OE-style radiator construction from Denso
• Core dimensions: 23.6250 in. height, 14.5620 in. width, 0.6250 in. thickness
• Transmission oil cooler included
• Inlet diameter: 1.3750 in.
• Outlet diameter: 1.3750 in.
• Built to match OE manufacturer standards for configuration, fitment, and durability

OE-Style Cooling Performance

Denso 221-3159 is engineered using the company’s OE supplier experience to match the radiator configuration, tank design, fin pitch, core dimensions, and materials required for reliable engine cooling. For Toyota Corolla and Toyota Matrix applications, this radiator supports stable operating temperatures and consistent heat rejection under everyday driving conditions. The part number 221-3159 is a direct replacement choice for drivers who need a radiator that follows factory-style specifications.

This part cross-references Toyota 16410-0T030 and 16410-0T031 for the same application.

Vehicle Fitment

• Fits 2009-2013 Toyota Corolla, N/A, exc. Japan Built Vehicle.
• Fits 2012-2013 Toyota Corolla, N/A, exc. Japan Built Vehicle (Auto Trans).
• Fits 2009-2013 Toyota Matrix, N/A.

Common Cooling System Issues It Can Address

• Overheating caused by a worn or inefficient radiator
• Coolant leaks from aging radiator tanks or core damage
• Transmission fluid temperature concerns when the cooler circuit is part of the radiator
• Reduced cooling efficiency from clogged or deteriorated internal passages
• Fitment problems from using a radiator that does not match OE dimensions

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet size, and transmission cooler connections before installation. Confirm vehicle build details carefully, since some Toyota Corolla applications exclude Japan-built vehicles, and 2012-2013 Corolla fitment also excludes Japan-built vehicles with automatic transmission. Flush the cooling system, inspect hoses and clamps, and refill with the correct coolant specification after installation.

Quality Assurance

Denso radiators are produced to OE-level standards and undergo durability and function testing before release. The 221-3159 is built to deliver dependable cooling performance and fitment consistency for Toyota Corolla and Toyota Matrix applications.