Denso 221-3514 Radiator

Denso Radiator for Mazda CX-9 Cooling

This Denso radiator, part number 221-3514, is built for Mazda CX-9 applications that require OE-style cooling performance and precise fitment. It is a direct replacement radiator for 2007-2015 Mazda CX-9 models without a towing package, with transmission oil cooler integration included.

Key Features

• Core height: 19.6870 in.
• Core width: 29.4370 in.
• Core thickness: 0.6250 in.
• Inlet diameter: 1.3750 in.
• Outlet diameter: 1.3750 in.
• Transmission oil cooler included
• OE-based radiator configuration for proper fit and cooling performance

Detailed Description

Denso part number 221-3514 is engineered to match OE radiator dimensions, tank design, fin pitch, and materials used in factory cooling systems. For Mazda CX-9 owners, that means a radiator built to support stable engine temperature control and consistent heat exchange under everyday driving conditions. This radiator is listed for 2007-2011 Mazda CX-9 and 2012-2015 Mazda CX-9 models without the towing package, making it a focused replacement for the correct vehicle configuration.

Denso supplies radiators to vehicle manufacturers worldwide, and this unit reflects that OE development background with attention to fitment, durability, and function. If you are replacing a leaking, clogged, or damaged radiator on a Mazda CX-9, 221-3514 provides the dimensions and cooler integration needed for a proper service replacement.

This part cross-references Spectra Premium CU2986 for the same application.

What This Radiator Helps Address

• Engine overheating caused by reduced coolant flow
• Coolant leaks from a cracked or corroded radiator
• Transmission temperature concerns tied to radiator cooler failure
• Poor heat dissipation from a restricted or damaged core
• Fitment issues when replacing the original Mazda CX-9 radiator

Installation Notes and Tips

Verify that your Mazda CX-9 does not have the towing package before ordering, since fitment is specific to non-towing-package vehicles. Confirm inlet and outlet hose sizes, cooler line routing, and overall core dimensions against the original radiator before installation. Flush the cooling system, inspect hoses and clamps, and refill with the correct coolant mixture after installation.

Quality Assurance

Denso radiators are built to OE standards and undergo durability and function testing before release. That manufacturing approach supports reliable cooling performance and fitment for Mazda CX-9 replacement service.