The RAM 2500 typically has two air filtration components: one engine air filter and one cabin air filter. If your truck uses the 6.7-liter Cummins diesel, the engine filtration is two-stage, meaning there are two engine filters in that system, which brings the total to three air filters in that setup.
Engine and cabin air filtration explained
Below is a practical rundown of how the filtration breaks down by common RAM 2500 powertrains. The exact configuration can vary by model year and trim, so consult your owner’s manual for your specific truck.
- Gasoline-powered RAM 2500 with a 5.7-liter Hemi: typically has one engine air filter plus one cabin air filter, for a total of two filters.
- Diesel-equipped RAM 2500 with a 6.7-liter Cummins: features a two-stage engine air filtration system (two separate engine filters) plus a cabin air filter, totaling three filters.
Note: The presence and location of the cabin air filter can vary by year and trim. Always verify with the owner's manual or a trusted service source for your exact vehicle configuration.
Where the filters are located
The engine air filter is housed in a large air box in the engine bay. The cabin air filter is usually located behind the glove box or beneath the dash on the passenger side, depending on the model year.
Model-year and trim variations
Across different model years, Ram has updated filtration configurations. In most late-model RAM 2500s, a cabin air filter is present, but its exact location and the number of engine air filter elements can differ between the gasoline and diesel versions. If you’re unsure, a quick check of the maintenance section in the manual or a service bulletin for your year is advisable.
Bottom line
For most RAM 2500s, expect two filters (engine and cabin). If you own a Cummins 6.7L diesel, you should anticipate three filters due to the two-stage engine filtration, though always confirm for your specific year and configuration.
Summary
The RAM 2500’s filter count depends on the engine: two filters for the typical gasoline setup (one engine filter and one cabin filter), and three filters for the Cummins 6.7L diesel (two engine filters in a two-stage setup plus one cabin filter). Always verify based on your exact year and model.