The Fram oil filter number commonly cited for the 2021 Honda Civic is PH9688. Always double-check compatibility for your exact engine and market before purchasing.
Understanding Fram cross-references for the 2021 Civic
Honda’s 2021 Civic lineup uses a few overlapping engine configurations, and Fram’s cross-reference guides are designed to map filters to those engines. For most U.S. Civics in that year, Fram’s cross-reference commonly links PH9688 to the required oil filter. To stay certain, compare the Fram cross-reference with your vehicle’s engine code and the OEM filter number.
Key points to keep in mind when choosing a Fram filter for the Civic:
- PH9688 is a widely cited Fram cross-reference for the 2021 Civic’s oil filter needs.
- Some markets or trims may require a different cross; always verify using your VIN and engine code.
- Cross-referencing with Honda’s OEM number (15410-PRB-003 or its current equivalent) can help confirm fit.
In practice, many owners rely on PH9688 as the Fram-compatible option for the 2021 Civic, but engine variants and regional differences can affect exact compatibility. Always verify with official references before purchase.
How to verify the right Fram filter for your Civic
To ensure you select the correct Fram filter, follow these verification steps:
- Check your vehicle’s engine code and trim to determine the exact filter requirements.
- Use Fram’s official cross-reference tool or consult with a parts specialist to confirm PH9688 matches your engine family.
- Cross-check with the Honda OEM filter number (15410-PRB-003 or the current equivalent) to validate compatibility.
While PH9688 is a commonly cited match for the 2021 Civic, variations by market and engine variant mean you should confirm with Fram’s cross-reference or a dealership using your VIN.
Additional notes
Always consider the oil type and capacity for your Civic when replacing the filter. Some Fram filters also pair with specific oil viscosities, so align the filter with the recommended oil for your engine. If you’re unsure, asking a certified technician or using Fram’s customer support can help ensure you’ve got the correct part number.


