Dorman 918-978 Automatic Transmission Oil Cooler
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Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price
$213.40
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Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.
Product Description
This automatic transmission oil cooler is designed to match the function of an original cooler on specified vehicles. It is engineered to help maintain proper engine oil temperature when an original cooler has failed from heat, corrosion, or damage.
- Direct replacement - this automatic transmission fluid cooler is designed to match the function of an original cooler on specified vehicle
- Ideal solution - engineered to help maintain proper transmission fluid temperature when an original cooler has failed from heat, corrosion or damage
- Durable construction - designed and manufactured to strict specifications for reliable performance
- Trustworthy quality - backed by a team of product experts in the United States and more than a century of automotive experience
Detailed Applications
| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| 2019 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2019 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2019 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2019 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2018 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2018 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2018 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2018 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2017 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2017 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2017 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2017 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); DIESEL; Allison Trans. | ||
| 2016 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); DIESEL | ||
| 2016 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); DIESEL | ||
| 2016 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); DIESEL | ||
| 2016 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); DIESEL | ||
| 2015 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); DIESEL | ||
| 2015 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); DIESEL | ||
| 2015 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); DIESEL | ||
| 2015 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); DIESEL |
Product Specifications
| Cooling Row Quantity: | 10 |
|---|---|
| Core Material: | Aluminum |
| Core Row Quantity: | 10 |
| Depth: | 11 in |
| Electric Fan: | No |
| Finish: | Painted |
| Grade Type: | Standard Replacement |
| Height: | 6 in |
| Housing Color: | Black |
| Inlet Attachment Type: | Threaded |
| Inlet Diameter: | 0.94 in |
| Length: | 20 in |
| Line Included: | No |
| Material: | Steel and Aluminum |
| Mounting Hardware Included: | No |
| Outlet Attachment Type: | Threaded |
| Outlet Diameter: | 0.65 in |
| Package Contents: | 1 Automatic Transmission Oil Cooler |
| Package Quantity: | 1 |
| Packaging Type: | Box |
| Thickness: | 1.4 in |
| Tube Included: | No |
| Width: | 1.4 in |
OE Numbers
| DIRECT OE CROSS | |
|---|---|
| 23448375 | GENERAL MOTORS |
| 84173163 | GENERAL MOTORS |