/live/media/NP/NP_2219012_Fro.jpg)
Denso 221-9012 Radiator
| Brand | Denso 221-9012 |
|---|---|
| Core Height | 18.1100 |
| Core Thickness | 1.0620 |
| Core Width | 26.8770 |
| Inlet Diameter | 1.3380 |
| Outlet Diameter | 1.5740 |
| Transmission Oil Cooler Included | YES |
| Fits | Chevrolet, GMC, Buick, and Oldsmobile · 35 vehicles |
OE experience. Built to OE standards for reliable performance and fitment.
Radiator performance. Essential for proper engine cooling and function.
Transmission oil cooler included. Adds integrated cooling support in one assembly.
Cross-references ACDelco 21505, APDI 8012458 and Chevrolet 15196385 for the same application. See all 9.
Denso Radiator for Trailblazer and Envoy
The Denso 221-9012 radiator is built for direct-fit engine cooling performance in select GM SUVs. It combines OE-style dimensions with an integrated transmission oil cooler to support stable coolant and transmission fluid temperatures in daily driving and demanding conditions.
- Core height: 18.1100
- Core width: 26.8770
- Core thickness: 1.0620
- Inlet diameter: 1.3380
- Outlet diameter: 1.5740
- Transmission oil cooler included: Yes
- OE-style radiator configuration for accurate fitment
OE-Style Cooling Performance
Denso 221-9012 is engineered to match OE radiator specifications for core dimensions, tank design, fin pitch, and materials. That attention to fit and construction helps maintain proper engine cooling and supports reliable operation in vehicles such as the Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Trailblazer EXT, Envoy XL, Envoy XUV, and Oldsmobile Bravada. This part cross-references Spectra Premium CU2458 for the same application.
What This Radiator Helps Address
- Engine overheating caused by reduced radiator efficiency
- Coolant temperature instability during stop-and-go driving
- Transmission fluid heat buildup in vehicles with an integrated cooler
- Leaks or corrosion in an aging factory radiator
- Poor fitment from non-OE-style replacement parts
Installation Notes and Fitment
Fits 2002-2009 Chevrolet Trailblazer, N/A. Fits 2002-2006 Chevrolet Trailblazer EXT, N/A. Fits 2002-2009 GMC Envoy, N/A. Fits 2002-2006 GMC Envoy XL, N/A. Fits 2004-2005 GMC Envoy XUV, N/A. Fits 2004-2007 Buick Rainier, N/A. Fits 2002-2004 Oldsmobile Bravada, N/A.
Verify inlet and outlet sizing, cooler line routing, and mounting points before installation. Flush the cooling system, inspect hoses and clamps, and confirm the transmission cooler connections are clean and secure before returning the vehicle to service.
Quality Assurance
Denso supplies radiators to OE vehicle manufacturers worldwide, and this radiator is built to the same standards used in OE applications. Each unit is tested for durability and function to support dependable cooling performance and consistent fitment.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2009 | Chevrolet | Trailblazer | N/A | — |
| 2009 | GMC | Envoy | N/A | — |
| 2008 | Chevrolet | Trailblazer | N/A | — |
| 2008 | GMC | Envoy | N/A | — |
| 2007 | Buick | Rainier | N/A | — |
| 2007 | Chevrolet | Trailblazer | N/A | — |
| 2007 | GMC | Envoy | N/A | — |
| 2006 | Buick | Rainier | N/A | — |
| 2006 | Chevrolet | Trailblazer | N/A | — |
| 2006 | Chevrolet | Trailblazer EXT | N/A | — |
| 2006 | GMC | Envoy | N/A | — |
| 2006 | GMC | Envoy XL | N/A | — |
| 2005 | Buick | Rainier | N/A | — |
| 2005 | Chevrolet | Trailblazer | N/A | — |
| 2005 | Chevrolet | Trailblazer EXT | N/A | — |
| 2005 | GMC | Envoy | N/A | — |
| 2005 | GMC | Envoy XL | N/A | — |
| 2005 | GMC | Envoy XUV | N/A | — |
| 2004 | Buick | Rainier | N/A | — |
| 2004 | Chevrolet | Trailblazer | N/A | — |
| 2004 | Chevrolet | Trailblazer EXT | N/A | — |
| 2004 | GMC | Envoy | N/A | — |
| 2004 | GMC | Envoy XL | N/A | — |
| 2004 | GMC | Envoy XUV | N/A | — |
| 2004 | Oldsmobile | Bravada | N/A | — |
| 2003 | Chevrolet | Trailblazer | N/A | — |
| 2003 | Chevrolet | Trailblazer EXT | N/A | — |
| 2003 | GMC | Envoy | N/A | — |
| 2003 | GMC | Envoy XL | N/A | — |
| 2003 | Oldsmobile | Bravada | N/A | — |
| 2002 | Chevrolet | Trailblazer | N/A | — |
| 2002 | Chevrolet | Trailblazer EXT | N/A | — |
| 2002 | GMC | Envoy | N/A | — |
| 2002 | GMC | Envoy XL | N/A | — |
| 2002 | Oldsmobile | Bravada | N/A | — |
| No rows match your filter. | ||||