What is the oil filter number for a 2009 Honda Civic? The correct part number depends on which engine the car uses. For the common 1.8-liter Civic, the OEM filter is typically 15400-PLM-A02. The Civic Si’s 2.0-liter engine uses a different Honda part number, so it’s important to verify the exact engine code before purchase.
Understanding the 2009 Civic’s engine options
In 2009, the Honda Civic lineup included two main engine configurations: the 1.8-liter i-VTEC (R18A1) used in the LX/EX trims, and the 2.0-liter K-series engine found in the high-performance Si. The oil filter part number is not universal across these engines, so owners should identify their engine before ordering a replacement.
1.8L i-VTEC (R18A1) engine
The OEM oil filter commonly used with the 1.8L Civic is 15400-PLM-A02. This number appears in Honda’s official parts catalogs for vehicles sharing the R18A1 family and is widely used across model years that employ this engine.
2.0L engine (Civic Si, K-series)
The 2.0L Civic Si uses a different oil filter part number from the 1.8L model. The typical OEM filter in Honda’s catalog for this engine is 15400-RAA-A01, though revision updates can occur. Always confirm via VIN or the official parts catalog if you’re unsure.
Quick reference by engine
To provide a concise reference, here is the engine-to-filter-number mapping for the 2009 Civic variants. If your vehicle has a different engine variant or has undergone parts substitutions, verify with the dealer or the parts catalog.
- 1.8L i-VTEC (R18A1): 15400-PLM-A02
- 2.0L (K-series, Civic Si): 15400-RAA-A01
Note: While these numbers cover the typical configurations, Honda occasionally revises part numbers or uses regional variants. If you see a different number on a bill, box, or on the old filter, use that as a cross-reference and verify with the VIN-specific catalog entry.
How to verify the correct oil filter
- Check the engine code in your owner’s manual or on the Honda VIN label. The engine code determines the compatible filter.
- Inspect the old filter for the part number stamped on it or on the box the old filter came in.
- Consult Honda’s official parts website or contact a local dealer with your VIN to confirm the exact part number.
Verifying with the exact VIN ensures you get the precise filter for your car, especially if regional part revisions exist or if the vehicle has been modified.
Replacement tips and considerations
When replacing the oil filter, also confirm the correct oil type and capacity for your engine. Use the recommended grade and viscosity for your climate and driving conditions, and replace the O-ring on the filter cap if applicable. If you’re using an aftermarket filter, ensure it is a trusted brand and cross-referenced to the OEM part number for your engine.
Summary
For a 2009 Honda Civic, the oil filter number is engine-dependent. The 1.8L i-VTEC (R18A1) typically uses 15400-PLM-A02, while the 2.0L (Civic Si) usually uses 15400-RAA-A01. Always verify with your VIN, engine code, or the official Honda Parts Catalog to ensure you order the correct filter, as revisions and regional variants can occur. Proper verification helps avoid fitment issues and ensures optimal engine protection.


