BMW X4 M40i Cabin Air Filter by Year
The BMW X4 M40i (2019–2023) uses a consistent filter part number across all 5 checked model years. Select a year below to open the exact page with source notes before ordering.
| Year | Filter | Source coverage | Page |
|---|---|---|---|
| 2023 | Purolator C31485C | Reference | Open record → |
| 2022 | Purolator C31485C | Reference | Open record → |
| 2021 | Purolator C31485C | Reference | Open record → |
| 2020 | Purolator C31485C | Reference | Open record → |
| 2019 | Purolator C31485C | Reference | Open record → |
Filter part number
Purolator C31485C
Same across all 5 listed years
BMW X4 M40i cabin air filter — frequently asked questions
- What cabin air filter fits the BMW X4 M40i?
- Checked catalogs list Purolator C31485C as a compatible cabin air filter for the BMW X4 M40i (2019–2023). Confirm this part number in the seller's vehicle selector before ordering.
- How many years of BMW X4 M40i cabin air filter data do you have?
- Our checked records cover 5 model years for the BMW X4 M40i (2019–2023). Select a year in the table above to open the exact fitment record.
- How often should I replace the BMW X4 M40i cabin air filter?
- Most manufacturers recommend replacing the cabin air filter every 15,000–25,000 miles or once a year, whichever comes first. Check your BMW X4 M40i owner's manual for the exact interval and inspect it at every oil change.
Look up a specific BMW X4 M40i year
Select a model year to open the exact checked cabin air filter fitment record before ordering.