What an engine air filter does and why it matters

Your Honda Accord's engine air filter stops dust, pollen, and debris from entering the engine while it runs. A clogged filter forces your engine to work harder to pull in air, which reduces fuel economy, makes acceleration feel sluggish, and can eventually damage engine components. Replacing it is one of the cheapest maintenance tasks you can do yourself, usually taking 10 to 15 minutes and costing $15 to $40 for the part.

Most Accord owners should replace the filter every 15,000 to 30,000 miles, though this varies based on driving conditions. If you drive in dusty areas or on unpaved roads frequently, check it every 10,000 miles. You can inspect it yourself before replacing — if it looks gray or caked with dirt, it needs to come out.

Key Takeaways

  • Engine air filters on Honda Accords sit in a plastic box under the hood and can be replaced without special tools in under 15 minutes.
  • Replacement intervals depend on driving conditions, ranging from 10,000 to 30,000 miles, and you can visually inspect the filter to decide if it needs changing.
  • The correct filter part number varies by model year and engine type, so confirm yours before purchasing.
  • A clogged filter reduces fuel economy and engine performance, making replacement one of the most cost-effective maintenance tasks.

Locating the air filter on your Accord

The engine air filter sits in a black plastic box mounted on top of or to the side of the engine, depending on your model year. On most Accords from 2013 onward, it is located on the driver's side of the engine bay, near the firewall. On older models, the location varies — check your owner's manual for the exact spot if you are unsure.

You do not need to remove any major engine components to access it. The plastic box has clips or a cover that you can open by hand. Before you start, make sure the engine is cool and the car is parked on level ground with the parking brake set.

Steps to replace the filter yourself

Step 1: Open the air filter box. Locate the plastic housing and look for clips or latches holding it closed. Most Accords have two to four clips on the sides or top. Press or unclip them and lift the cover off. Set it aside where it will not get dirty.

Step 2: Remove the old filter. Lift the filter straight up and out of the box. It may be dusty, so do this over a trash can or outside to avoid spreading debris inside the engine bay. Look at the filter's shape and size so you know what to order if you do not already have a replacement.

Step 3: Clean the filter box. Use a dry cloth or a shop vacuum to wipe out any loose dust or debris inside the plastic housing. This prevents dirt from entering the engine when you install the new filter.

Step 4: Insert the new filter. Slide the new filter into the box, making sure it sits flat and fully inside. The filter should fit snugly without forcing. Check that the rubber seal around the edges is seated evenly all the way around.

Step 5: Close the cover and find the clips. Place the plastic cover back on top of the box and press the clips or latches until they click or snap into place. Make sure the cover is seated firmly so no air can bypass the filter.

Choosing the right filter for your model year

Honda Accord air filters are not universal — the part number changes by model year and engine size. The most common filters are the Honda OEM part 17220-5AA-A00 (used on many 2013–2017 models) and 17220-5AA-A01 (2018 and newer), but your specific year may differ. Check your owner's manual or the filter box itself for the correct part number before you buy.

You can purchase OEM Honda filters from a Honda dealership or aftermarket filters from auto parts stores. OEM filters cost more but are made to exact Honda specifications. Aftermarket brands like Fram, Bosch, and Mann+Hummel are generally reliable and less expensive. Either way, confirm the part number matches your Accord's year and engine before checkout.

Signs your filter needs replacing sooner

A clogged filter does not always wait until the scheduled interval. If you notice your Accord feels less responsive when accelerating, gets noticeably worse fuel economy than usual, or the check engine light comes on, a dirty filter could be the cause. You can also visually inspect the filter by opening the box — if it looks dark gray or black instead of white or light tan, it is time to replace it.

Driving in heavy traffic, dusty conditions, or on unpaved roads accelerates filter clogging. If you do this regularly, check the filter every 5,000 to 10,000 miles instead of waiting for the standard interval. Catching a clogged filter early prevents unnecessary strain on your engine and keeps fuel economy from dropping.

When to have a professional handle it

Replacing an air filter is straightforward enough for most owners, but if you are uncomfortable working under the hood or do not have a safe workspace, a Honda dealership or independent mechanic can do it in minutes. The labor cost is usually $20 to $50 on top of the filter price, making the total $40 to $90 depending on where you go.

Some dealerships bundle air filter replacement into routine maintenance visits, so if you are already there for an oil change or inspection, ask them to check and replace the filter at the same time. This ensures it is done correctly and you have a record of the service for your vehicle's history.

Frequently Asked Questions

How do I know what air filter part number my Accord needs?

Check your owner's manual in the maintenance section, or look at the old filter itself — the part number is printed on the frame. You can also call a Honda dealership with your vehicle identification number (VIN) and they will tell you the correct part. Auto parts stores can also look it up if you provide your Accord's year, make, and engine size.

Can a clogged air filter damage my engine?

A very clogged filter can reduce airflow enough to cause rough idling, hesitation, or even a check engine light. Over time, it may allow some unfiltered air past the filter, which could introduce particles into the engine. Replacing it before it gets that dirty prevents these problems and keeps your engine running smoothly.

Is there a difference between OEM and aftermarket air filters?

OEM Honda filters are made to exact Honda specifications and fit perfectly. Aftermarket filters from reputable brands work well and cost less, but quality varies by brand. Either type will protect your engine if it fits correctly and is replaced on schedule. Choose based on your budget and preference.

What should I do with the old filter?

Most auto parts stores will recycle old filters if you bring them in, often for free. You can also throw it in the trash — it is not hazardous. Do not leave it in the engine bay or store it where it could contaminate other parts.