How to Replace Your Honda Accord 2.4L Engine Air Filter — 10-Minute Job, No Tools Required
, by iFJF Direct, 7 min reading time
How to Replace Your Honda Accord 2.4L Engine Air Filter — 10-Minute Job, No Tools Required
If your 2008-2012 Accord 2.4L feels sluggish off the line or you've noticed the fuel economy creeping down, start with the cheapest fix on the list: the engine air filter. A clogged filter chokes airflow and forces the ECU to pull timing and dump extra fuel. Honda says replace it every 30,000 miles, but if you drive dirt roads, park under trees, or live somewhere dusty — you're looking at 15,000 miles, maybe less.
The CA10467 rigid panel filter drops right into the 8th-gen Accord and 2012-2015 Crosstour with the K24 2.4L. It's an exact match for OEM part 17220-R40-A00 and crosses to GP467 and A3164C. Same pleat count, same neoprene seal, same dimensions. You can knock this out in 10 minutes flat. No tools. No jack stands. Just pop the hood and go.
Symptoms That Tell You It's Time
Most people wait until the filter looks like a mouse nest before touching it. By then, you've been paying for it at the pump for months. Here's what to watch for:
- Throttle lag: You stab the gas, the engine thinks about it, then goes. That hesitation is the engine struggling to pull air through a dirty element.
- MPG dropping 2-3: If you track fuel-ups and see a dip without a change in driving habits, air restriction is a prime suspect.
- Visual check: Pull the filter. Hold it up to sunlight or a flashlight. If light barely passes through, it's done. Dark grey paper instead of white/yellow = replacement time.
- Rough idle: A mildly starved engine hunts for idle. Not always the filter — could be a dirty MAF or vacuum leak — but it's the cheapest thing to rule out first.
- Check engine light on a scan tool: P0171 or P0172 (lean/rich codes) can sometimes trace back to a filter so dirty it's tricking the MAF readings.
What You Need
Flathead screwdriver or a 10mm socket. That's it. The K24 engine uses a plastic airbox with metal spring clips — no bolts on the lid itself. If your clips are seized, a squirt of WD-40 and a flathead to pry them loose does the job. Some owners find the rear clip a bit buried, but you can reach it blind with one hand.
One thing: have a shop rag ready. The bottom of the airbox collects sand, bugs, and random leaves. Wipe it out before you drop the new filter in. A shop vac with a crevice tool is even better.
Step-by-Step Replacement
- Park level, engine off, hood open. Airbox is on the driver's side, right behind the headlight. Big black plastic box, hard to miss.
- Unclip the intake hose. There's a rubber accordion hose clamped to the airbox lid. Loosen the worm clamp with a flathead or 8mm nut driver and wiggle the hose free. You don't need to fully remove it — just enough slack to lift the lid.
- Release the metal spring clips. Three of them around the perimeter of the airbox lid. Squeeze and pull down. If one's stuck, flathead under the lip and gently pry.
- Lift the lid. The lid hinges on tabs at the bottom edge. Tilt it up and out. If the intake hose is still attached, just flip the lid toward the engine — no need to disconnect the MAF sensor wiring.
- Pull the old filter. Straight up and out. Note which direction the pleats run — horizontal. The new CA10467 goes in the same way.
- Clean the box. Wipe or vacuum the bottom of the lower housing. Debris here gets sucked straight into the engine if the filter doesn't seal right.
- Drop in the CA10467. The rubber seal goes face-down into the groove around the edge of the housing. Press gently around all four sides to seat it evenly. The filter only fits one way — pleats horizontal, and the seal will tell you if it's upside down.
- Close the lid. Make sure the tabs at the bottom catch first, then lower the top edge. Re-clip all three spring clamps.
- Reattach the intake hose. Slide the boot back on and tighten the clamp. Don't Hulk out on it — snug is fine. Overtightening cracks plastic airbox nipples. Ask me how I know.
- Start the engine. Let it idle for 30 seconds. No CEL, no whistle, no hunting — you're done.
Pro Tips from Real Mechanics
Don't blow out a paper filter with compressed air. I see this all the time — guys think they're saving money. You're not. Compressed air tears microscopic holes in the cellulose fibers that your eyes can't see. After that, the filter's media efficiency is shot. If it's dirty, replace it. A CA10467 costs less than lunch.
Replace the cabin filter at the same time. The cabin air filter lives behind the glovebox on 8th-gen Accords. It's a separate 5-minute job and usually just as dirty. Honda part number 80292-SDA-A01 for the OEM piece. If your AC smells like a gym bag, that's the cabin filter, not the engine filter — but they tend to get neglected together.
Don't over-oil a performance filter if you switch. Some guys swap in a K&N or similar oiled gauze filter. Fine. But over-oiling sends residue downstream onto the MAF sensor hot wire. Then you get erratic idle, stumble, and a P0171 code. If your MAF sensor looks greasy, you found the problem.
Check the MAF sensor while you're in there. Two T20 Torx screws hold the MAF in the airbox lid. Pop it out, spray it with MAF cleaner (CRC 05110), let it dry, reinstall. Do NOT touch the wire element with anything — spray only. Five-minute add-on that smooths out idle and throttle response if it was dirty.
If the "Check Engine" light was on before and stays on after: Disconnect the negative battery terminal for 10 minutes to reset the ECU. Then drive normally for a couple of warm-up cycles. If the code comes back, your filter wasn't the whole story — start looking at the MAF, upstream O2 sensor, or a vacuum leak.
CA10467 Cross-Reference & Compatibility
| OEM / Brand | Part Number |
|---|---|
| Honda (Genuine) | 17220-R40-A00 |
| FRAM | CA10467, GP467 |
| ACDelco | A3164C |
| Bosch | 5438WS |
| WIX | WA10163 |
| Purolator | A35440 |
Compatible vehicles:
- 2008-2012 Honda Accord 2.4L L4 (all trims)
- 2012-2015 Honda Crosstour 2.4L L4
⚠️ Does NOT fit the 3.5L V6 Accord or Crosstour. Those use a round/canister-style filter. If you have the V6, cross-reference to CA10468 instead.
FAQ
How often should I replace the engine air filter on my Honda Accord?
Honda's schedule says every 30,000 miles. But pop it out and look at 15,000 if you drive on gravel, in heavy pollen areas, or in stop-and-go city traffic. The filter costs under $20 — no reason to stretch it.
Can a dirty air filter cause a check engine light?
Not directly, but indirectly yes. A severely clogged filter skews the MAF sensor readings, which can throw P0171 (lean) or P0172 (rich) codes. More often it just causes poor performance without triggering the CEL.
What's the difference between the CA10467 engine filter and the cabin air filter?
The engine filter (CA10467) goes in the airbox under the hood and filters air going into the engine for combustion. The cabin filter sits behind the glovebox and filters air coming through your HVAC vents. Two completely different jobs, two different locations.
Will a performance air filter give me more horsepower?
On a stock K24? Maybe 1-3 HP at the top end. Most of the "gain" people feel is just the difference between a new clean filter and the old dirty one they took out. The bigger benefit of a reusable filter is long-term cost, not power.
Which way does the air filter go in — pleats vertical or horizontal?
Horizontal on the K24 airbox. The rubber seal side faces down. If you try to install it upside down or rotated, the lid won't close properly and you'll get unfiltered air bypassing the element. If the lid fights you, the filter's in wrong.
Got a 2008-2012 Accord or Crosstour 2.4L? Grab the CA10467 Air Filter — same OEM fit as the 17220-R40-A00 at a better price. While you're there, pick up an PF457GO oil filter and knock out both basic maintenance items in one session. Browse more air filters for your vehicle.