Denso 221-3509 Radiator

Overview of the Denso Radiator for Mazda 5

The Denso 221-3509 radiator is designed specifically for the Mazda 5, providing reliable cooling performance. Engineered with precise core dimensions, this radiator supports efficient heat dissipation to maintain optimal engine temperature.

• Core Height: 14.5 inches
• Core Width: 25.562 inches
• Core Thickness: 0.625 inches
• Inlet Diameter: 0.937 inches
• Outlet Diameter: 0.937 inches
• Transmission Oil Cooler: Not included

Detailed Product Description

This Denso radiator, part number 221-3509, features a core height of 14.5 inches and a width of 25.562 inches, providing a substantial surface area for effective cooling. The core thickness of 0.625 inches ensures durability while allowing sufficient coolant flow. Both the inlet and outlet diameters measure 0.937 inches, matching the Mazda 5’s factory specifications for seamless integration. This radiator does not include a transmission oil cooler, focusing solely on engine cooling functions.

Compatible Vehicles and Applications

Compatible with Mazda 5 models, the Denso 221-3509 radiator is engineered to meet the cooling requirements of this vehicle. It is suitable for owners seeking a direct replacement radiator that maintains factory fit and function.

• Overheating issues due to radiator core damage or clogging
• Coolant leaks from cracked or corroded radiator cores
• Reduced cooling efficiency causing engine temperature fluctuations
• Physical damage from road debris or accidents
• Replacement during engine cooling system upgrades or maintenance

Installation Notes and Tips

When installing the Denso 221-3509 radiator on a Mazda 5, ensure all hose connections match the 0.937-inch inlet and outlet diameters for proper fit. Drain the existing coolant completely before removal and inspect surrounding components such as hoses and clamps for wear. Properly torque mounting bolts to manufacturer specifications to avoid leaks or damage. Bleed the cooling system after installation to remove air pockets and verify coolant flow.

Quality Assurance and Warranty

Denso radiators are manufactured to meet OEM standards, ensuring reliable performance and durability. The 221-3509 radiator undergoes rigorous quality control testing to verify core integrity and fitment accuracy. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.