The air filter on RAM 2500 trucks is located in the engine bay inside a rectangular black plastic housing, typically on the passenger side. The housing is secured with clips or screws and connects to a large intake tube that feeds the throttle body. This guide covers where to look across common RAM 2500 engines and how to replace the filter.
Air filter location by engine type
Gasoline engines (5.7L Hemi and 6.4L Hemi)
In most RAM 2500s equipped with gasoline engines, the air filter box sits in the upper portion of the engine bay on the passenger side, near the front. Look for a rectangular black plastic housing with a large intake tube running toward the throttle body.
Key identification cues to locate the box quickly:
- Rectangular black plastic air box
- Large intake hose leading to the throttle body
- Clips or screws securing the lid
- Positioned near the passenger fender area, visible from above the wheel well
For most gasoline Rams, this location is straightforward to access from the engine bay and is a common maintenance point for replacement filters.
Diesel engines (6.7L Cummins)
The 6.7L Cummins diesel in RAM 2500 models also uses a rectangular air box, but mounting and fasteners can vary slightly by year. It is generally located in the engine bay near the front, either on the driver or passenger side depending on the model year, with a similar intake hose leading to the turbo and intercooler system.
- Rectangular air box with intake hose
- Fasteners may be clips or screws
- Box lid is removable to access the filter
- Located in the engine bay between the grille and firewall area
Always consult the owner’s manual or a service bulletin for your exact year and engine variant, as placement can shift slightly with design updates.
How to replace the air filter
Replacing the RAM 2500 air filter is a routine maintenance task. The general process is similar across engines, though fasteners and exact lid design can vary.
- Park on level ground, apply the parking brake, and open the hood to locate the air box (passenger side for most gasoline engines; check diesel layout if your truck differs).
- Release the clips or remove the screws holding the lid of the air box and set the lid aside.
- Lift out the old air filter element and note how it sits in the housing for correct reinstallation.
- Wipe or brush out any loose debris from the inside of the box; avoid using compressed air outside the box.
- Insert the new air filter, ensuring it seats evenly with the grooves aligned, then reseat the lid and secure the fasteners.
- Reconnect any hoses or clamps if they were disturbed, start the engine, and check for proper operation without vacuum leaks.
Refer to your owner's manual for the recommended replacement interval, which varies by engine and driving conditions. Gasoline RAM 2500 models typically range from about 15,000 to 30,000 miles, while diesel models may have longer intervals, but always prioritize a visual inspection if you drive in dusty or harsh environments.
What to watch for
A dirty or clogged air filter can reduce power, throttle response, and fuel economy. If you notice unusual performance changes or a service alert, inspect the air box and replace the filter as needed.
Summary
On RAM 2500 pickups, the air filter is housed in a rectangular box in the engine bay, most commonly on the passenger side for gasoline engines and in a comparable location for diesel variants. Replacement involves opening the box, swapping in a new filter, and resecuring the lid. Always confirm the exact location for your model year and engine type in the owner's manual.