The exact oil filter depends on which engine your Altima has. The 2009 model offered two engines: a 2.5-liter four-cylinder QR25DE and a 3.5-liter VQ35DE. Verify which engine you have to identify the correct filter number.
Two engines, two filters
In the 2009 Altima, the oil filter design and part number differ between the 2.5L inline-four and the 3.5L V6. The Nissan factory manual and parts catalogs list separate part numbers and cross-refs for each engine. Use your VIN or engine code to get an exact match.
2.5L QR25DE (four-cylinder)
For the 2.5L QR25DE, use the oil filter that Nissan designates for this engine. In practice, many owners obtain an OEM replacement or a compatible aftermarket filter that fits the QR25DE’s spin-on canister. Always confirm with a parts diagram or by cross-referencing with your VIN to ensure the correct model and thread size.
- Check the owner’s manual or maintenance schedule for the recommended filter specification.
- Consult a Nissan parts diagram or retailer using your VIN to identify the exact part number.
- When buying aftermarket, choose a filter that explicitly states compatibility with QR25DE and the 2009 Altima.
Using the correct filter ensures proper sealing, pressure, and filtration for the QR25DE engine.
3.5L VQ35DE (V6)
For the 3.5L VQ35DE, a different oil filter is required. As with the four-cylinder, consult official diagrams or a parts retailer using your VIN to get the exact Nissan part number or a trusted aftermarket cross-reference.
- Review the service manual or parts fiche to locate the exact V6 filter designation.
- Use your VIN at Nissan Parts or a trusted retailer to pull the correct filter number.
- Consider reputable aftermarket options that specify VQ35DE compatibility and 2009 Altima.
Matching the correct filter to your engine prevents leaks and maintains oil pressure and flow for the V6.
How to verify the exact part number quickly
To avoid guessing, use one or more of these quick verification steps before purchasing:
- Find your engine code on the engine block or vehicle invoice; QR25DE or VQ35DE indicates the correct path.
- Inspect the current oil filter; the manufacturer imprint or model can guide you to the correct replacement.
- Input your VIN on Nissan’s official parts site or a trusted auto parts retailer to pull the exact OEM part number.
With a VIN or engine code, you can confidently purchase the right filter the first time.
Alternatives and compatibility
Several aftermarket brands manufacture compatible oil filters for the Altima’s engines. When selecting alternatives, ensure the filter is rated for the correct engine, flow rate, and thread size. Cross-reference with QR25DE or VQ35DE compatibility for 2009 Altima models.
- Common aftermarket options include filters marketed for the QR25DE 2.5L engine.
- Common aftermarket options include filters marketed for the VQ35DE 3.5L engine.
Always verify the specific part number across your source to avoid mismatches.
Conclusion
In short, the oil filter for a 2009 Nissan Altima depends on the engine. Confirm whether your car has the 2.5L QR25DE or the 3.5L VQ35DE to identify the exact replacement part, using the VIN or engine code as your guide. This ensures you get the correct filter for your vehicle’s needs.
Summary
The 2009 Altima requires different oil filters depending on engine type. Use engine code or VIN to verify the exact Nissan Genuine Part number or a compatible aftermarket filter. Always rely on official diagrams or trusted retailers to confirm compatibility before purchasing.