OE Quality
60-Day Returns

Denso 221-3426 Radiator
Overview of the Denso Radiator for Infiniti G35
The Denso 221-3426 radiator is designed specifically for the Infiniti G35, providing reliable cooling performance. This radiator includes a built-in transmission oil cooler, making it a comprehensive cooling solution for your vehicle.
- Core Height: 15.75 inches
- Core Thickness: 0.625 inches
- Core Width: 29.00 inches
- Transmission Oil Cooler Included
- Inlet Diameter: 1.437 inches
- Outlet Diameter: 1.437 inches
Detailed Product Description
The Denso 221-3426 radiator is engineered to meet the cooling requirements of the Infiniti G35. Its core dimensions—15.75 inches in height, 29 inches in width, and 0.625 inches in thickness—ensure efficient heat dissipation. The radiator also features a transmission oil cooler integrated within the unit, which helps maintain optimal transmission fluid temperature. Both the inlet and outlet diameters measure 1.437 inches, allowing for proper hose fitment and fluid flow. This radiator is designed to maintain engine temperature under various driving conditions, supporting the overall performance and longevity of the Infiniti G35.
Common Applications and Problem Resolution
- Replaces leaking or damaged radiators in Infiniti G35 models
- Addresses overheating issues caused by inefficient cooling
- Resolves transmission fluid overheating with integrated oil cooler
- Fixes coolant leaks due to core damage or corrosion
- Improves engine cooling system reliability and efficiency
Installation Notes and Tips
- Ensure compatibility with Infiniti G35 before installation
- Inspect and replace radiator hoses if worn or damaged
- Drain coolant and transmission fluid before removal
- Check for proper sealing on inlet and outlet connections (1.437 inch diameter)
- Bleed the cooling system after installation to remove air pockets
Quality Assurance and Warranty
Denso radiators are manufactured to meet OEM specifications for fit, form, and function. The 221-3426 radiator undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Denso products typically include a limited warranty against defects in materials and workmanship, providing confidence in the product's reliability for Infiniti G35 owners.
| Brand | Denso |
| Part Number | 221-3426 |
| Core Height | 15.7500 |
| Core Thickness | 0.6250 |
| Core Width | 29.0000 |
| Inlet Diameter | 1.4370 |
| Outlet Diameter | 1.4370 |
| Transmission Oil Cooler Included | YES |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Body Type | Transmission | Position | Notes |
|---|---|---|---|---|---|---|
| 2007 | INFINITI | G35 | N/A | w/o AC Condenser | ||
| 2006 | INFINITI | G35 | Automatic | N/A | ||
| 2005 | INFINITI | G35 | Automatic | N/A | ||
| 2004 | INFINITI | G35 | Coupe | Automatic | N/A | |
| 2003 | INFINITI | G35 | Coupe | Automatic | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.