The oil filter part number is not universal across all Forester models; it varies by engine and year. In practice, Subaru uses oil filters in the 15208AA1x family, but the exact suffix depends on the exact engine and generation. To be certain, consult the official Subaru parts catalog or your local dealer using your VIN.
Why the number varies
Subaru’s Forester has evolved through multiple generations with different engine designs (from older EJ/FB engines to newer FA and FA-series variants). Each engine family can use a slightly different filter size, gasket diameter, and thread pitch, which is why several part numbers exist within the same general filter family.
Common OEM oil filter numbers you may encounter
- 15208AA12A
- 15208AA13A
- 15208AA15A
Regardless of which number you see, the exact filter that fits your Forester must be confirmed against your vehicle’s engine type and year. Using the wrong filter can lead to improper sealing or clearance issues, so always verify before purchasing.
How to confirm the exact part number for your Forester
Follow these steps to ensure you get the correct oil filter for your specific vehicle:
- Locate your vehicle’s engine code and model year from the owner’s manual, door jamb sticker, or VIN.
- Check the official Subaru Parts Catalog or a reputable parts retailer’s database using your VIN; the catalog will list the compatible oil filter by engine code and year.
- Remove the current oil filter and compare physical attributes (thread size, gasket diameter, base shape) with potential replacement filters to confirm a match.
- If in doubt, call a Subaru dealership or trusted parts store with your VIN to pull the exact OEM part number.
Notes on variations by generation and engine type
Early generations (pre-2010s)
Older Forester models used engines from the EJ/early FB families. While the general filter family remains in the 15208AA1x range, the suffix you need can differ from later models. Always verify with VIN-based catalogs.
Modern generations (2010s to present)
From mid-generation updates onward, Subaru shifted to newer engine families (FB/FA) and, more recently, FA-series engines. The exact 15208AA1x suffix can change with these updates, making VIN-based confirmation the safest approach.
Summary
In short, there isn’t a single fixed oil filter part number for all Subaru Forester models. The correct filter depends on the engine and year. Common OEM numbers you may encounter include 15208AA12A, 15208AA13A, and 15208AA15A, but the definitive number should be confirmed via the vehicle’s VIN in Subaru’s official parts catalog or by contacting a Subaru dealer. Always verify before buying to ensure proper fit and sealing.
For readers seeking quick guidance: start with your engine code and year, then cross-check the VIN-based Subaru parts catalog or ask a dealer to pull the exact OEM number. This approach helps avoid misfits across generations and engine types.