Denso 221-9506 Radiator

Denso Radiator for Mazda CX-3

This Denso radiator, part number 221-9506, is built for 2016-2021 Mazda CX-3 applications. It is engineered to match OE-style dimensions and cooling requirements for direct replacement service.

Key Features

• Core height: 14.7500
• Core width: 22.6250
• Core thickness: 0.6250
• Inlet diameter: 1.3125
• Outlet diameter: 1.3125
• No transmission oil cooler included
• OE-focused radiator configuration for Mazda CX-3 cooling system service

OE-Style Cooling Performance

Denso radiator 221-9506 is part of the brand’s radiator line, which draws on OE supplier experience for fitment and cooling-system consistency. The core dimensions, tank design, fin pitch, and materials are built to align with manufacturer standards, helping maintain proper engine temperature control in Mazda CX-3 models. This radiator is a direct-fit replacement for 2016-2019 Mazda CX-3 and 2020-2021 Mazda CX-3 applications.

This part cross-references Spectra Premium CU13585 for the same application.

Common Cooling System Issues It May Address

• Overheating caused by a leaking or restricted radiator
• Coolant loss from cracked tanks or damaged core passages
• Reduced heat transfer from corrosion or internal blockage
• Temperature instability during stop-and-go driving
• Cooling-system service needs on a Mazda CX-3 radiator replacement

Installation Notes and Fitment

Fits 2016-2019 Mazda CX-3, N/A. Fits 2020-2021 Mazda CX-3, N/A. Verify inlet and outlet diameter, core size, and hose routing before installation. Flush the cooling system, inspect hoses and clamps, and refill with the correct coolant specification after replacement.

Quality Assurance

Denso states that its radiators undergo durability and function testing before release. The brand’s OE manufacturing background supports consistent fitment and dependable cooling performance for Mazda CX-3 radiator replacement service.