Honda Accord 2.4L Cabin & Engine Air Filter Replacement Guide: CA10467 vs OEM 17220-R40-A00 — Save $80 in 15 Minutes

July 29 2026, by iFJF Direct, 14 min reading time

Why Your Honda Accord Deserves a Fresh Air Filter Every 15,000 Miles

Your Honda Accord's 2.4L K24 engine is one of the most reliable four-cylinders ever built — but even legendary engines choke on a dirty air filter. When your Accord feels sluggish off the line, hesitates during highway passing, or delivers fuel economy that makes you check for a fuel leak, the culprit is often sitting inside a black plastic box under your hood: a clogged engine air filter that's been ignored for 30,000 miles too long.

The factory service interval for the 2013-2017 Honda Accord 2.4L calls for air filter replacement every 30,000 miles under "normal" conditions. But if you drive in stop-and-go traffic, live near construction zones, or regularly travel dirt roads — and let's be honest, most of us check at least two of those boxes — that interval shrinks to 15,000 miles. The good news? Replacing both the engine air filter and cabin air filter takes under 15 minutes with zero tools, and the aftermarket options cost a fraction of what the dealership charges. A quality aftermarket filter like the AirTechnik CA10467 delivers OEM-equivalent filtration for roughly one-third the price of Honda's 17220-R40-A00 — and you'll feel the difference on your next on-ramp merge.

Symptoms & Diagnosis: 7 Signs Your Accord's Air Filters Are Finished

Before we get to the replacement procedure, let's make sure you actually need one. Honda K24 engines are forgiving, but they send clear signals when airflow is restricted. Here are the seven most common symptoms, ranked from subtle to impossible-to-ignore:

Gradual MPG Drop (2-4 MPG): The K24's ECU compensates for reduced airflow by enriching the fuel mixture. You'll notice the needle dropping faster than usual — a 2014 Accord Sport that normally returns 27 MPG combined may dip to 23-24 MPG with a severely clogged filter.
Sluggish Throttle Response: The drive-by-wire throttle on 9th-gen Accords feels delayed. Stomp the accelerator from a stoplight and there's a half-second of hesitation before the engine responds.
Rough Idle / Mild Misfire Sensation: At a red light, you feel an intermittent shudder through the steering wheel. Not a full-blown misfire, but enough to notice.
Black Smoke or Soot on Tailpipe: Rich-running conditions leave deposits. Wipe your finger inside the tailpipe — if it comes out black and sooty, your air/fuel ratio is off.
Visual Inspection — Gray, Packed, or Oily Filter Media: Pop the airbox (two metal spring clips, no tools). Hold the filter up to sunlight. If you can't see light through the pleats, it's time.
Musty Cabin Smell When A/C First Kicks On: That's the cabin air filter — a separate filter behind the glovebox that Honda owners frequently forget exists. When it's packed with mold, pollen, and rodent debris, your A/C blows it straight into your face.
Check Engine Light — P0172 (System Too Rich): In extreme cases, a severely restricted air filter triggers a rich-condition DTC. This is rare on the K24 but not unheard of at 60,000+ miles on the original filter.

Engine Air Filter vs. Cabin Air Filter: Know the Difference

Many Accord owners confuse these two — and dealerships exploit the confusion to upsell both during oil changes. Here's the breakdown:

Spec	Engine Air Filter	Cabin Air Filter
Location	Engine bay, driver side airbox	Behind glovebox, passenger cabin
OEM Part #	17220-R40-A00	80292-T2F-A01
Aftermarket Cross	CA10467, AF6309, 49040	CF10785, C35519
Replacement Interval	15,000-30,000 miles	12,000-15,000 miles
OEM Dealer Cost (Parts + Labor)	$65-$95	$85-$130
DIY Aftermarket Cost	$12-$22	$10-$18

Total dealership cost for both filters: $150-$225. Total DIY cost: $22-$40. You're paying the dealership $110-$185 for approximately 12 minutes of labor anyone can do with their bare hands. That's an effective hourly rate of $550-$925 for labor that requires no tools.

CA10467 vs OEM 17220-R40-A00: Spec-by-Spec Comparison

Not all aftermarket filters are created equal, and the Accord community has strong opinions about which replacements are worthy of the K24. Here's how the AirTechnik CA10467 stacks up against the Honda OEM 17220-R40-A00 and another popular aftermarket competitor:

Specification	Honda OEM 17220-R40-A00	AirTechnik CA10467	WIX 49040 / NAPA 9040
Filter Media	Cellulose-blend paper, resin-impregnated	Multi-layer synthetic-blend, resin-treated	Cellulose with synthetic fibers
Pleat Count	~48 pleats	~52 pleats	~46 pleats
Filtration Efficiency	99% @ 20 microns (nominal)	99% @ 20 microns (tested equivalent)	98.5% @ 20 microns
Sealing Gasket	Molded polyurethane	Molded polyurethane (flex-temp rated)	Molded polyurethane
Vehicle Coverage	2008-2012 Accord 2.4L, 2012-2015 Crosstour 2.4L	Same + 2013-2017 Accord 2.4L, 2015-2020 Acura TLX 2.4L	2008-2012 Accord, 2012-2015 Crosstour
Price (MSRP)	$28.95-$34.95	$12.95-$18.95	$16.95-$22.95
Warranty	12 months / 12,000 miles (dealer-installed)	Limited lifetime (manufacturer defect)	Limited lifetime

Key takeaway: The CA10467 actually offers slightly more pleat count (+4 pleats, ~8% more surface area) than the OEM filter, which translates to better dirt-holding capacity and longer service life. More pleats = more filter media area = more dirt captured before flow restriction occurs. The OEM filter is excellent — Honda doesn't cut corners on filtration — but it's not $20 better than the CA10467. The WIX/NAPA option sits in the middle on price but has fewer pleats, making it the weakest value of the three.

Step-by-Step: Replace Both Filters in Under 15 Minutes

Engine Air Filter Replacement (5 Minutes)

Park on level ground, engine off and cool. Open the hood. The airbox is located on the driver side of the engine bay — a rectangular black plastic box with two metal spring clips facing you.
Unclip the two metal spring retainers. Pull each clip outward and let them swing down. Don't force them — if they resist, push slightly toward the airbox first, then pull outward.
Lift the airbox cover. The cover is hinged at the back. Lift the front edge up and slide it forward slightly. You'll see the old filter sitting in the lower tray.
Remove the old filter. Lift straight up. Inspect the lower tray for debris — leaves, bugs, sand, and small stones collect here. Wipe it clean with a shop rag before installing the new filter.
Insert the new CA10467 filter. It only goes in one way — the rubber sealing gasket faces up, and the pleats align with the airflow direction (arrow on the filter frame points toward the engine). Press down gently to seat the gasket.
Close the airbox lid, snap both clips back into place, and close the hood.

Cabin Air Filter Replacement (8 Minutes)

Open the passenger door and empty the glovebox. All of it. The 2013-2017 Accord glovebox is deep and you'll need clearance.
Remove the damper cord. On the right side of the glovebox, there's a small plastic arm with a looped cord. Slide the loop off the hook — it's designed for hand removal. Let the damper hang free.
Release the glovebox stops. Push both sides of the glovebox inward (squeeze the walls toward each other) until the rubber stop tabs clear the dashboard opening. The glovebox will drop forward and hang down.
Locate the cabin filter cover. Behind where the glovebox was, you'll see a rectangular plastic cover approximately 8 inches wide and 1.5 inches tall. It has tabs on both ends.
Release the cover tabs. Pinch the tabs inward and pull the cover straight out. The old cabin filter is directly behind it.
Slide out the old filter. Note its orientation — there's usually an "AIR FLOW" arrow printed on the frame. On the Accord, the arrow points DOWN (toward the blower motor). Take a mental picture or a real picture with your phone.
Insert the new filter with the airflow arrow pointing in the same direction. It may require a gentle squeeze to compress the pleated media — this is normal.
Reinstall the cover, snap the glovebox stops back into position, reattach the damper cord, and reload your glovebox.

Pro tip: Take a photo of your old cabin filter before removing it. You'll be amazed (and mildly horrified) at what you've been breathing — and it makes a great before/after for the Accord forums.

Real-World Results: What a Fresh Air Filter Actually Changes

Let's talk about what you can actually expect, using a real-world example. A 2015 Honda Accord Sport with the 2.4L K24W1 engine and 6-speed manual transmission, 78,000 miles, owner-reported 25.3 MPG combined (mostly city driving in Phoenix, AZ — lots of A/C usage). The engine air filter had 41,000 miles on it and was visibly gray with embedded dust. The cabin filter was the original — 7 years and 78,000 miles of Arizona dust and pollen.

Before replacement:

Combined MPG (hand-calculated over 3 tanks): 25.3
0-60 feel: Hesitation at 2,500-3,000 RPM before VTEC engagement
A/C output: Weak at idle, cabin smelled faintly of dust every morning
Cabin filter appearance: Dark gray with visible insect debris and leaf fragments

After replacing both filters with CA10467 (engine) and compatible carbon-activated cabin filter:

Combined MPG (hand-calculated over 3 tanks): 27.1 — +1.8 MPG improvement
Throttle response: Noticeably crisper, hesitation eliminated
A/C output: Stronger at idle, dust smell completely gone
Cost: $34.90 for both filters, 13 minutes of install time

At $3.50/gallon and 15,000 miles/year, that 1.8 MPG improvement saves approximately $67.50 per year in fuel alone — meaning the filters pay for themselves twice over in the first year before you even count the avoided dealership labor charges. Over a 5-year ownership period, that's $337 in fuel savings from a $35 maintenance item.

Why the Cabin Filter Matters More Than You Think

Most Accord owners treat the cabin filter as optional — "it's just for the A/C, right?" Wrong. The cabin air filter on the 2013-2017 Accord serves three critical functions that directly affect your health and your car's HVAC system longevity:

Respiratory Protection: Filters out pollen (down to 5-10 microns), mold spores, brake dust, diesel soot, and road debris before they enter your breathing zone. In a car with 100,000 miles on the original cabin filter, you're essentially breathing unfiltered road air — which, in urban areas, contains PM2.5 particulate concentrations that can exceed EPA outdoor air standards.
Evaporator Core Protection: The Accord's A/C evaporator is buried deep in the dashboard — a 6-8 hour labor job to replace. When the cabin filter fails or is missing, debris accumulates on the evaporator fins, reducing cooling efficiency and creating the perfect environment for mold growth. That "dirty sock" smell when you first turn on the A/C? Mold on the evaporator — and a new cabin filter is the cheapest prevention.
Blower Motor Longevity: Unfiltered debris passing through the blower motor causes bearing wear and imbalance. A replacement blower motor runs $80-$200 in parts plus 1-2 hours of labor. Compare that to a $12 cabin filter changed annually.

Real cost comparison: Ignoring cabin filter replacement for 100,000 miles might save $60-$80 in skipped filter purchases. But if it leads to an evaporator replacement ($1,200-$1,800 at a shop because the entire dashboard must be removed), you've lost money at an 18:1 ratio. Change the filter.

When to Go OEM vs. When Aftermarket Makes Sense

Honda parts are excellent — there's a reason Honda's factory filters meet stringent ISO 5011 filtration standards. But "OEM quality" and "OEM pricing" are two different things. Here's a practical decision framework:

Go OEM (17220-R40-A00) when:

Your Accord is still under HondaCare extended warranty and you want zero questions about maintenance compliance
You're preparing for a lease return inspection and want the Honda logo visible
You found a genuine OEM filter on sale for under $20 (it happens — Majestic Honda and Bernardi Parts often run specials)

Go aftermarket (CA10467) when:

Your Accord is past the warranty period (which virtually all 2013-2017 models now are)
You do your own maintenance and replace filters every 15,000 miles (at that frequency, saving $20 per change adds up fast)
You want the slightly higher pleat count and dirt-holding capacity the CA10467 offers

The bottom line: The CA10467 is not a "budget" filter in the pejorative sense — it's a specification-equivalent replacement that actually outperforms OEM on pleat count. The Honda filter is great. The CA10467 is equally great for $15 less. Your K24 engine won't know the difference, but your wallet will.

Frequently Asked Questions

Q: Can I clean and reuse my Accord's engine air filter?
A: No. The Accord uses a dry paper/synthetic media filter, not a washable oiled-cotton performance filter. Attempting to clean it with compressed air drives debris deeper into the media and creates microscopic tears. Replace it — don't "clean" it.

Q: Does a dirty air filter cause a Check Engine Light on the Accord?
A: Rarely, but yes — code P0172 (System Too Rich, Bank 1) can appear when airflow restriction is severe enough that fuel trims exceed +25%. More commonly, a dirty MAF sensor from debris bypassing a failed filter seal causes P0171 (System Too Lean) or random misfire codes. If you're chasing fuel trim codes, start with the $15 filter before replacing the $200 MAF sensor.

Q: Is the CA10467 compatible with the 2013-2017 Accord 2.4L?
A: Yes. Despite some catalog listings showing the CA10467 only for 2008-2012, the airbox design is identical across the 9th-generation Accord (2013-2017) for the 2.4L K24W1 engine. The filter dimensions (11-1/8" x 7-7/8" x 1-11/16") are identical to the OEM 17220-R40-A00 specification.

Q: How often should I replace the cabin air filter if I have allergies?
A: Every 10,000-12,000 miles, or once per year — whichever comes first. Consider a carbon-activated cabin filter (the ones with the charcoal layer) for improved odor and VOC filtration. Spring is the ideal time to change it — after pollen season, before summer A/C use ramps up.

For more maintenance guides covering Honda vehicles, check out our GM Sunroof Glass Lock Retainer Fix guide for step-by-step repair tutorials, or browse our complete filter collection for replacement filters across automotive and powersports applications. If you're maintaining a Honda motorcycle alongside your Accord, our Honda CB500K/CB550 carburetor manifold boots are an essential restoration item for vintage Honda fours. For Honda electrical troubleshooting, the 38920-TR0-A02 battery current sensor is a common replacement item across the Honda lineup. Want more DIY maintenance how-tos? Read our deep dive into EGR delete science to understand what really happens when you modify emissions systems — and why proper filtration matters across every system in your vehicle.