What air filter does a 2018 Honda Accord use?

A 2018 Honda Accord uses two air filters: an engine intake air filter (often called the “air cleaner element”) and a cabin dust/pollen filter for the HVAC system. The cabin filter is common across trims, while the engine air filter varies by powertrain (1.5-liter turbo, 2.0-liter turbo, or Hybrid). To ensure the correct part, verify by VIN or the owner’s manual before buying.

Engine air filter: what it is and where it is

The engine air filter cleans the air entering the engine, protecting the turbo and internal components from dust and debris. On the 2018 Accord, it is a panel-style filter inside the black plastic air-box in the engine bay. Honda’s Maintenance Minder typically calls for replacement under code “2,” which often appears around 30,000 miles under normal conditions (earlier in dusty environments). Always follow your Maintenance Minder and local conditions.

Fitment varies by powertrain

The 2018 Accord was sold with three powertrains, and the air-box and filter element differ among them. Use the list below to match your trim and confirm fitment via VIN before ordering.

• 1.5-liter turbo (most LX, Sport 1.5T, EX, EX-L): Uses a specific rectangular air cleaner element sized for the 1.5T air-box.
• 2.0-liter turbo (Sport 2.0T, EX-L 2.0T, Touring 2.0T): Uses a different rectangular air cleaner element designed for the larger turbo engine’s air-box.
• Accord Hybrid (2.0-liter Atkinson-cycle with e-CVT): Uses a hybrid-specific air cleaner element matched to its unique intake housing.

Because the filter housing and dimensions differ, a 1.5T filter will not interchange with a 2.0T or Hybrid, and vice versa. If shopping aftermarket, select “2018 Accord” and your exact engine to ensure an exact-fit panel filter.

Cabin (HVAC) air filter: what it is and where it is

The cabin air filter cleans the air entering the heating and air-conditioning system, trapping dust, pollen, and other particulates. It sits behind the glove box and is easily replaced by dropping the glove box and sliding the old filter out. Honda typically schedules the cabin filter alongside the engine filter under Maintenance Minder code “2,” often around 15,000–30,000 miles, or sooner in high-pollen or smoky/dusty areas.

Cabin filter options

You can choose among several media types depending on air quality needs and budget.

• Standard particulate (paper): OEM-style filtration for dust and pollen; good airflow and value.
• Activated carbon: Adds odor and gaseous pollutant adsorption; helpful for urban traffic and smoke.
• HEPA-grade: Finer filtration for very small particles; may trade some airflow for higher capture efficiency.

All three styles are sold in exact-fit sizes for the 2018 Accord. If you choose aftermarket, ensure the filter is listed as compatible with your model year and generation.

How to confirm the exact filter your Accord needs

Use one or more of the following methods to guarantee the correct fit before purchase.

1. Owner’s manual: Check the maintenance and specifications sections for the proper filter descriptions and guidance.
2. VIN lookup: Enter your VIN on Honda’s official parts site or a reputable dealer eStore to retrieve the exact OEM part numbers for your trim and engine.
3. Under-hood check: Open the air-box, remove the existing filter, and note any part numbers printed on the element or air-box cover.
4. Reputable parts catalogs: Use a trusted online catalog, selecting “2018 Honda Accord” and your exact engine (1.5T, 2.0T, or Hybrid) to see the matching engine and cabin filters.

Confirming via VIN is the most reliable method, especially if your vehicle has mid-year changes, dealer-installed accessories, or market-specific variations.

Service tips and replacement basics

Typical DIY replacement of both filters takes 10–20 minutes with no special tools. Inspect the engine filter every oil change in dusty environments; replace sooner if the pleats are dark or clogged. For the cabin filter, consider upgrading to activated carbon or HEPA in areas with smoke, heavy pollen, or pollution. Always orient filters according to the airflow arrows on the frame.

Summary

A 2018 Honda Accord uses two air filters: an engine intake air cleaner element that varies by engine (1.5T, 2.0T, or Hybrid) and a cabin dust/pollen filter common across trims. Replace them when prompted by the Maintenance Minder (often code “2”) or sooner in harsh conditions. To buy the correct part the first time, verify by VIN or your owner’s manual and choose OEM or exact-fit aftermarket equivalents suitable for your driving environment.

What is the most common problem with the 2018 Honda Accord?

Owner Reported Trouble Spots

• In-car Electronics. Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
• Climate System.
• Electrical Accessories.
• Exhaust.
• Fuel System/Emissions.
• Noises/Leaks.
• Brakes.
• Engine Major.

What is the air filter number for a 2018 Honda Accord?

2018-2022 Honda Accord Engine Air Filter 1.5L – 17220-6A0-A00.

Where is the air filter on a 2018 Honda Accord Sport?

Tasks. Be sure to seat the intake pipe into the rubber hose and seat the cover properly over the filter box base before reattaching the two metal. Clips. That’s it you’re done.

How do I know which air filter to get for my car?

Factors to Consider When Buying a New Engine Air Filter for Your Car

1. Choosing the right engine air filter is more critical than you think.
2. Filter’s Size & Style.
3. Driving Conditions.
4. Filtration Efficiency.
5. OEM Recommendations.
6. Ease of Installation.
7. Warranty.