Does a 6.7 Cummins fuel-filter service include both filters?

Check the truck's model year and fuel-system layout before you order anything. The 6.7 Cummins name spans years of changes, so a parts list from another owner's Ram is not enough. For example, the 2022 Ram 2500/3500 diesel manual has separate service sections for the engine-mounted fuel filter and the underbody fuel filter. On a truck with that arrangement, an invoice naming only one part leaves a question worth asking. Call the shop and request the part numbers and locations serviced. A single invoice line may cover a kit containing both filters, or it may describe only one replacement. Do not accuse the seller of skipping maintenance until you know which it is. If records cannot establish when the required filters were changed, have the correct service performed and document the date and mileage. Use the exact-year maintenance schedule, including its time and operating-condition requirements. Do not borrow another owner's mileage interval as a guarantee. After service, leaks, hard starting, or warning messages need attention. Correct installation and the specified priming procedure matter. A reset service indicator is useful for tracking the next job, but the invoice is what tells the next owner what was actually done.