2019 Subaru WRX STI engine air filter: Sizes & Replacement Parts
Catalog-backed engine air filter part numbers for the 2019 Subaru WRX STI 2.5L turbo include WIX WA11690 / Purolator A31833. Confirm the final part number before checkout.
Looking for the cabin / A/C air filter instead? 2019 Subaru WRX STI cabin air filter →
Choose your engine size
The 2019 Subaru WRX STI uses different engine air filter part numbers by engine. Select your engine, then use the part numbers in that panel.
2.5L turbo
Main catalog answer: WIX WA11690 / Purolator A31833
- Filter type
- Basic
- Sources
- WIX Filters, Purolator Now
Links search this exact part number. Confirm 2019 Subaru WRX STI and the 2.5L turbo engine in the seller's vehicle selector before checkout.
Fitment scope and limits
This 2019 Subaru WRX STI engine air filter page has one checked engine row. Confirm the same vehicle in the seller's selector before checkout.
The checked catalogs did not provide source-backed replacement interval for this exact record, so this page does not publish those fields.
Catalogs can list more than one part number for the same vehicle. Use this page to compare the listed numbers, then use the seller's vehicle selector before ordering.
Source notes
Listed in 2 catalogs. These part numbers come from filter manufacturer catalogs. Use the source trail below to see which catalog supported this page.
| Source | Role | Supports | Checked |
|---|---|---|---|
| Purolator Now | Primary | Filter for 2.5L turbo | 2026-06-26 |
| WIX Filters | Corroboration | Filter for 2.5L turbo | 2026-06-26 |
Checked catalogs: Purolator Now, WIX Filters. Replacement interval is not listed unless a source provides it for this exact vehicle and engine row.
2019 Subaru WRX STI maintenance checklist
One part checked. Look up the rest while you're here.
- Cabin air filter 2019 Subaru WRX STI cabin filter part numbers
- Engine air filter WIX WA11690 / Purolator A31833 Checked
- Wiper blade size 2019 Subaru WRX STI driver & passenger blade sizes
- Oil type & capacity 2019 Subaru WRX STI oil viscosity & fill amount
Questions this page answers
What engine air filter fits the 2019 Subaru WRX STI 2.5L turbo?
Checked catalogs list WIX WA11690, Purolator A31833 for the 2019 Subaru WRX STI 2.5L turbo. The primary listing is WIX WA11690 / Purolator A31833. Confirm this part number in the seller's vehicle selector before ordering.
Is the 2019 Subaru WRX STI engine air filter the same across all engine options?
This 2019 Subaru WRX STI engine air filter page has one checked engine row. Confirm the same vehicle in the seller's selector before checkout.
Does this page confirm a replacement interval?
The checked catalogs did not provide source-backed replacement interval for this exact record, so this page does not publish those fields.
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