Subaru WRX STI Cabin Air Filter by Year
The Subaru WRX STI (2015–2021) uses a consistent filter part number across all 7 checked model years. Select a year below to open the exact page with source notes before ordering.
| Year | Filter | Source coverage | Page |
|---|---|---|---|
| 2021 | WIX 24030 / Purolator C36115C | Verified fit | Open record → |
| 2020 | WIX 24030 / Purolator C36115C | Verified fit | Open record → |
| 2019 | WIX 24030 / Purolator C36115C | Verified fit | Open record → |
| 2018 | WIX 24030 / Purolator C36115C | Verified fit | Open record → |
| 2017 | WIX 24030 / Purolator C36115C | Verified fit | Open record → |
| 2016 | WIX 24030 / Purolator C36115C | Verified fit | Open record → |
| 2015 | WIX 24030 / Purolator C36115C | Verified fit | Open record → |
Filter part number
WIX 24030 / Purolator C36115C
Same across all 7 listed years
Subaru WRX STI cabin air filter — frequently asked questions
- What cabin air filter fits the Subaru WRX STI?
- Checked catalogs list WIX 24030 / Purolator C36115C as a compatible cabin air filter for the Subaru WRX STI (2015–2021). Confirm this part number in the seller's vehicle selector before ordering.
- How many years of Subaru WRX STI cabin 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.
- How often should I replace the Subaru WRX STI 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 Subaru WRX STI owner's manual for the exact interval and inspect it at every oil change.
Look up a specific Subaru WRX STI year
Select a model year to open the exact checked cabin air filter fitment record before ordering.