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Denso 221-3406 Radiator
| Brand | Denso 221-3406 |
|---|---|
| Core Height | 23.5000 |
| Core Thickness | 0.9370 |
| Core Width | 26.8120 |
| Inlet Diameter | 1.3750 |
| Outlet Diameter | 1.3750 |
| Transmission Oil Cooler Included | YES |
| Fits | Nissan and INFINITI · 30 vehicles |
OE experience. Built to meet strict OE standards for reliable fit and performance.
Durability tested. Passes rigorous function checks for dependable cooling under demanding conditions.
Transmission oil cooler included. Adds integrated cooling support in one radiator assembly.
Cross-references APDI 8012691, CSF 3150 and CSF 3693 for the same application. See all 13.
Denso 221-3406 Radiator for Nissan and Infiniti
The Denso 221-3406 radiator is built for direct replacement cooling performance in select Nissan Armada, Nissan TITAN, and INFINITI QX56 applications. It uses OE-style dimensions and materials to support proper engine temperature control, with an integrated transmission oil cooler included.
Key Features
- Core height: 23.5000 in.
- Core width: 26.8120 in.
- Core thickness: 0.9370 in.
- Inlet diameter: 1.3750 in.
- Outlet diameter: 1.3750 in.
- Transmission oil cooler included
- OE-focused fitment and construction from Denso
Detailed Description
Denso part number 221-3406 is a radiator engineered to match OE specifications for cooling system fit and function. Denso supplies radiators to vehicle manufacturers worldwide, and this unit reflects that OE experience through controlled core dimensions, tank design, fin pitch, and material selection. For drivers searching for a radiator for 2004-2015 Nissan TITAN, 2005-2015 Nissan Armada, or 2004-2010 INFINITI QX56, this replacement supports the cooling demands of the engine while also including the transmission oil cooler connection required by the application.
This part cross-references Spectra Premium CU2691 and CSF 3150 for the same application.
What This Radiator Helps Address
- Engine overheating caused by a leaking or restricted radiator
- Cooling system performance loss from damaged core tubes or fins
- Transmission fluid temperature control concerns in equipped vehicles
- Fitment issues from an incorrect OE-style replacement radiator
- Coolant loss related to cracked tanks or worn radiator seams
Installation Notes and Tips
Verify inlet and outlet hose sizes before installation: both are 1.3750 in. Confirm radiator support condition, inspect hoses and clamps, and flush the cooling system if contamination is present. Because this radiator includes a transmission oil cooler, check all cooler line connections for proper sealing after installation. Fits 2005-2015 Nissan Armada, N/A. Fits 2004-2015 Nissan TITAN, N/A. Fits 2004-2010 INFINITI QX56, N/A.
Quality Assurance
Denso states that its radiators are built to meet OE manufacturer standards and are subjected to durability and function testing before release. That OE-based validation helps support reliable cooling performance in demanding driving conditions.
| Year | Make | Model | Fuel Type | Position | Notes |
|---|---|---|---|---|---|
| 2015 | Nissan | Armada | — | N/A | — |
| 2015 | Nissan | TITAN | — | N/A | — |
| 2014 | Nissan | Armada | — | N/A | — |
| 2014 | Nissan | TITAN | — | N/A | — |
| 2013 | Nissan | Armada | — | N/A | — |
| 2013 | Nissan | TITAN | — | N/A | — |
| 2012 | Nissan | Armada | — | N/A | — |
| 2012 | Nissan | TITAN | — | N/A | — |
| 2011 | Nissan | Armada | — | N/A | — |
| 2011 | Nissan | TITAN | — | N/A | — |
| 2010 | INFINITI | QX56 | — | N/A | — |
| 2010 | Nissan | Armada | — | N/A | — |
| 2010 | Nissan | TITAN | — | N/A | — |
| 2009 | INFINITI | QX56 | — | N/A | — |
| 2009 | Nissan | Armada | — | N/A | — |
| 2009 | Nissan | TITAN | — | N/A | — |
| 2008 | INFINITI | QX56 | — | N/A | — |
| 2008 | Nissan | Armada | — | N/A | — |
| 2008 | Nissan | TITAN | — | N/A | — |
| 2007 | INFINITI | QX56 | — | N/A | — |
| 2007 | Nissan | Armada | — | N/A | — |
| 2007 | Nissan | TITAN | — | N/A | — |
| 2006 | INFINITI | QX56 | — | N/A | — |
| 2006 | Nissan | Armada | — | N/A | — |
| 2006 | Nissan | TITAN | — | N/A | — |
| 2005 | INFINITI | QX56 | — | N/A | — |
| 2005 | Nissan | Armada | — | N/A | — |
| 2005 | Nissan | TITAN | GAS | N/A | — |
| 2004 | INFINITI | QX56 | — | N/A | — |
| 2004 | Nissan | TITAN | — | N/A | — |
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