Denso 221-3237 Radiator

Denso Radiator for Acura MDX and ZDX

The Denso 221-3237 radiator is built for direct-fit engine cooling performance in select Acura applications. It is engineered to match OE-style dimensions and materials, with the core size, inlet and outlet sizing, and integrated transmission oil cooler configuration needed for proper thermal control.

Compatible with 2007-2013 Acura MDX and 2010-2012 Acura ZDX, this radiator supports consistent coolant flow and dependable heat rejection in daily driving and demanding conditions.

Key Features

• Core height: 19.6870 in.
• Core width: 30.1870 in.
• Core thickness: 1.0600 in.
• Inlet diameter: 1.2500 in.
• Outlet diameter: 1.2500 in.
• Transmission oil cooler included
• OE-style fitment for Acura MDX and Acura ZDX applications

Detailed Description

Denso 221-3237 is a radiator designed around OE supplier experience, with configurations that follow manufacturer-level standards for tanks, fin pitch, core dimensions, and materials. That attention to fit and construction helps maintain stable engine temperature and supports reliable cooling system operation. For shoppers searching for a radiator for 2007-2013 Acura MDX or a radiator for 2010-2012 Acura ZDX, this unit provides the dimensions and cooler integration needed for a proper replacement.

This part cross-references APDI 8012938 for the same application.

What This Radiator Helps Address

• Overheating caused by a worn or inefficient radiator
• Coolant leaks from aging radiator tanks or core damage
• Reduced cooling performance from restricted heat transfer surfaces
• Transmission fluid temperature control concerns in equipped vehicles
• Fitment issues from non-OE-style replacement parts

Installation Notes and Tips

Verify core dimensions, inlet and outlet diameter, and transmission cooler connections before installation. Flush the cooling system, inspect hoses and clamps, and confirm the radiator cap and coolant condition are serviceable. After installation, refill with the correct coolant specification and bleed air from the system according to factory procedure.

Quality Assurance

Denso supplies radiators to OE vehicle manufacturers worldwide, and this radiator is built to meet rigid OE standards for performance, reliability, and fitment. Each unit passes durability and function testing before release.