Subaru WRX STI Engine Air Filter by Year
Compare Subaru WRX STI engine air filter part numbers by model year. Select a year to open the checked fitment record with source notes before ordering.
| Year | Filter | Source coverage | Page |
|---|---|---|---|
| 2021 | WIX WA11690 / Purolator A31833 | Verified fit | Open record → |
| 2020 | WIX WA11690 / Purolator A31833 | Verified fit | Open record → |
| 2019 | WIX WA11690 / Purolator A31833 | Verified fit | Open record → |
| 2018 | 2 engine options | Reference | Open record → |
| 2017 | 2 engine options | Reference | Open record → |
| 2016 | 2 engine options | Reference | Open record → |
| 2015 | 2 engine options | Reference | Open record → |
Subaru WRX STI engine air filter — frequently asked questions
- What engine air filter fits the Subaru WRX STI?
- Engine air filter part numbers can vary across Subaru WRX STI model years. Select your exact year in the table above to see the checked part number for that year.
- How many years of Subaru WRX STI engine air filter data do you have?
- Our checked records cover 7 model years for the Subaru WRX STI (2015–2021). Select a year in the table above to open the exact fitment record.
Look up a specific Subaru WRX STI year
Select a model year to open the exact checked engine air filter fitment record before ordering.