There isn’t a single universal part number for every 2021 Accord. There are two air filters in the car—the engine air filter and the cabin air filter—and the exact part numbers depend on which engine you have and your trim level.
Understanding the two filters
The Accord uses an engine air filter to protect the intake and a cabin air filter to clean the air entering the passenger compartment. Because the two filters serve different systems, their part numbers are not interchangeable and vary by engine specification and model year.
Engine air filter
To identify the correct engine air filter part number, check the filter housing label, your vehicle’s VIN, or Honda’s official parts catalog. The engine air filter is sometimes listed under codes that begin with 17220, but the exact suffix changes with engine generation and trim.
Common methods to verify the engine air filter part number for your 2021 Accord:
- Look inside the engine air filter housing for the printed part number on the filter or housing cover.
- Consult the Honda Parts Online catalog using your VIN to pull the exact match.
- Ask a Honda dealership parts desk with your VIN for the precise number and a compatible replacement.
Once you have the right engine air filter number, you can cross-check at parts retailers or order directly from Honda.
Cabin air filter
The cabin air filter number follows a different set of codes. Similar verification steps apply: inspect the filter housing or consult the official parts catalog using your VIN. The cabin filter is commonly listed separately from the engine filter, reflecting its own part code.
Steps to verify the cabin air filter part number for your 2021 Accord:
- Inspect the cabin filter housing for a part number stamp or tag.
- Use Honda's official parts database with your VIN to locate the exact cabin filter part code.
- Provide your vehicle’s year, make, model, and engine to a dealer or auto parts retailer to obtain the correct number.
Having both numbers ensures you can purchase the correct parts for both filtration systems.
Where to buy and how to confirm
Once you’ve identified the exact part numbers, you have several options for purchasing and confirmation:
- Honda official parts website or dealership parts counter with VIN verification.
- Licensed auto parts retailers that support VIN-based lookups.
- Local service centers that can order the parts for you and confirm fitment.
Always double-check the part numbers against your VIN and the filter housing label before finalizing a purchase to avoid ordering the wrong filter.
Conclusion and quick takeaway
In a 2021 Honda Accord, there are two filters—engine and cabin—and the part numbers are not universal. The exact codes depend on your engine type and trim, so verify with the VIN through Honda’s catalogs, the filter housing, or a dealer to ensure you buy the correct replacements.
Summary
Key takeaway: don’t assume a single part code will fit all 2021 Accords. Confirm the engine air filter and cabin air filter part numbers with official catalogs or a trusted dealer using your VIN, then purchase the matching filters.