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OE Quality
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Dorman 918-391 Power Steering Cooler
Dorman 918-391 Power Steering Cooler
Dorman 918-391 is a direct replacement power steering cooler for select Ram heavy-duty trucks. It is built to match the original cooler’s fit and function, with aluminum construction and push-in fittings for a factory-style service replacement.
Key Features
- Direct replacement power steering cooler for specified vehicles
- Aluminum construction for dependable heat transfer and durability
- Black finish
- Push-in inlet and outlet fittings
- Standard replacement grade
- Overall width: 21.76 in; length: 5.46 in; height: 11.63 in; thickness: 2 in
- Inlet and outlet fitting inside diameter: 0.45 in; outside diameter: 0.55 in
Detailed Description
This Dorman power steering cooler is engineered as an OE-style replacement for Ram 2500 and Ram 3500 applications. Part number 918-391 is designed to restore proper power steering fluid cooling by matching the original cooler’s fitment and connection style, helping maintain consistent steering system performance in demanding driving conditions. This part cross-references Mopar 68242791AA for the same application.
What It Helps Address
- Power steering fluid temperatures that run higher than normal
- Reduced steering assist caused by overheated fluid
- Leaks or damage in the original cooler assembly
- Fitment issues when replacing a worn factory cooler on Ram 2500 and Ram 3500 trucks
- Service replacement needs for OE-style steering system cooling
Installation Notes and Tips
Fits 2015-2018 Ram 2500, N/A. Fits 2015-2018 Ram 3500, N/A. Verify inlet and outlet dimensions, mounting location, and hose connection style before installation. Confirm the cooler matches the original routing and connection points on the vehicle. Part number 918-391 is intended for direct replacement use on the listed Ram applications.
Quality Assurance
Dorman manufactures this cooler as a standard replacement component using quality materials for reliable performance and durability. The design follows the original cooler’s fit and function for the listed Ram truck applications.
| Brand | Dorman |
|---|---|
| Part Number | 918-391 |
| Material | Aluminio |
| Material | Aluminum |
| Length | 5.46 |
| Color | Black |
| Color | Negro |
| Color | Noir |
| Thickness | 2 |
| Height | 11.63 |
| Grade Type | Reemplazo estándar |
| Grade Type | Standard replacement |
| Inlet Fitting Inside Diameter | 0.45 |
| Outlet Fitting Inside Diameter | 0.45 |
| Inlet Fitting Outside Diameter | 0.55 |
| Fitting Type | Empujar hacia adentro |
| Fitting Type | Push-in |
| Outlet Fitting Outside Diameter | 0.55 |
| Ancho total | 21,76 in |
| Contenidos del paquete | 1 refrigerante de la dirección hidraulica |
| Overall Width | 21.76 in |
| Package Contents | 1 power steering cooler |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2018 | Ram | 2500 | 6.7L | L6 | N/A | |
| 2018 | Ram | 3500 | 6.7L | L6 | N/A | |
| 2017 | Ram | 2500 | 6.7L | L6 | N/A | |
| 2017 | Ram | 3500 | 6.7L | L6 | N/A | |
| 2016 | Ram | 2500 | 6.7L | L6 | N/A | |
| 2016 | Ram | 3500 | 6.7L | L6 | N/A | |
| 2015 | Ram | 2500 | 6.7L | L6 | N/A | |
| 2015 | Ram | 3500 | 6.7L | L6 | 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.