Denso 221-3246 Radiator

Denso Radiator for 2008-2010 Honda Accord

Denso 221-3246 is an OE-style radiator built for 2008-2010 Honda Accord applications. It is specified with a 15.7500-inch core height, 30.2500-inch core width, and 0.6250-inch core thickness, along with 0.9370-inch inlet and outlet diameters for direct cooling-system connection.

This radiator includes a transmission oil cooler and is engineered to match OE radiator configuration, tank design, fin pitch, core dimensions, and material standards. For Honda Accord cooling-system service, Denso 221-3246 provides a fitment-focused replacement built around factory-style dimensions and function.

Key Features

• Fits 2008-2010 Honda Accord
• Part number: 221-3246
• Core height: 15.7500 in.
• Core width: 30.2500 in.
• Core thickness: 0.6250 in.
• Inlet diameter: 0.9370 in.
• Outlet diameter: 0.9370 in.
• Transmission oil cooler included
• OE-based radiator configuration for factory-style fitment

Detailed Description

Denso 221-3246 is a radiator for the 2008-2010 Honda Accord that follows OE engineering standards for cooling performance, fitment, and durability. Denso supplies radiators to vehicle manufacturers worldwide, and this unit reflects that OE experience through its core sizing, tank layout, and cooling-system connections. The result is a radiator built to support stable engine temperature control and consistent heat exchange in daily driving and demanding conditions.

For shoppers searching for a 2008 Honda Accord radiator, 2009 Honda Accord radiator, or 2010 Honda Accord radiator, this part number 221-3246 is a direct-reference option with the correct core dimensions and integrated transmission oil cooler. This part cross-references Spectra Premium CU2990 and CSF 3368 for the same application.

What It Helps Address

• Overheating caused by a failing radiator core
• Coolant leaks from a damaged or corroded radiator
• Poor heat transfer from restricted or worn cooling passages
• Transmission cooling concerns when the radiator-mounted cooler is compromised
• Fitment issues from using a radiator with incorrect dimensions or hose connections

Installation Notes and Tips

Verify hose diameter, core size, and transmission cooler line routing before installation. Flush the cooling system, inspect hoses and clamps, and confirm the radiator mounts and fan shroud alignment match the vehicle before final assembly. After installation, refill with the correct coolant mixture and bleed air from the system according to Honda service procedures.

Quality Assurance

Denso states that its radiators are built to OE manufacturer standards and undergo durability and function testing before release. That quality process is intended to support reliable cooling performance and proper fitment for Honda Accord radiator replacement service.