Part numbers vary by engine type: for most 2010 Forester models with the 2.5-liter engine, the OEM air filter number is 16546AA020; for the turbocharged 2.5L XT variant, it uses a different number such as 16546AA041. Always verify with your VIN or the current filter label.
In more detail, Subaru offered two main engine configurations in the 2010 Forester lineup: a naturally aspirated 2.5-liter engine and a turbocharged 2.5-liter engine. The air-filter is an exchangeable wear item, and Subaru’s official parts catalog assigns distinct part numbers to each engine configuration. Because revisions and regional catalogs differ, it’s best to confirm the exact number for your specific vehicle before purchase.
Engine options and corresponding air-filter numbers
Non-turbo 2.5L Forester
The 2.5L naturally aspirated Forester commonly uses the OEM air-filter part number 16546AA020. Note that variations can occur by production revision or regional catalog, so verification is advised.
Turbocharged 2.5L Forester (XT)
The turbocharged 2.5L XT model typically uses a different filter number, commonly cited as 16546AA041, with potential regional or revision differences. Always confirm via the official parts catalog or by inspecting the current filter packaging.
To help ensure you get the right part, here are some steps you can take to verify the exact number for your vehicle.
Before ordering, use these steps to identify the correct part number for your Forester:
- Check the current air filter for a part number printed on the filter itself or on the packaging when it’s removed from the housing.
- Identify your engine type and model year exactly (2.5L NA vs. 2.5L turbo XT) since the numbers differ by configuration.
- Match your VIN to Subaru’s official parts catalog or contact a Subaru dealer to pull the exact OEM number for your vehicle.
- Consult the owner’s manual or service supplement that accompanies your specific vehicle build for any part-number notes.
Using these steps will help ensure you buy the correct air filter for your Forester, avoiding mismatches that could affect fit or performance.
In addition to OEM numbers, you can also reference reputable aftermarket cross-refs, but verify compatibility with your engine and intake housing before purchasing.
Common guidance and cross-reference options
Here are the two most frequently cited OEM numbers by engine type, with the caveat that regional catalogs may differ. Use these as a starting point and verify with your vehicle’s VIN and current housing label.
- 2.5L non-turbo (NA) Forester: 16546AA020
- 2.5L turbo Forester (XT): 16546AA041
Cross-references and aftermarket filters are available from brands such as Fram, K&N, andPurolator, but ensure the cross-reference matches your engine configuration and housing dimensions.
Summary
The air-filter part number for a 2010 Subaru Forester depends on the engine type. For most 2.5L NA models, the OEM number is commonly 16546AA020; for the turbocharged XT variant, the number is commonly 16546AA041. Confirm the exact part number by checking the current filter, referencing the VIN in Subaru’s official parts catalog, or asking a Subaru dealer. Always double-check to ensure proper fit and performance.