2016–2021 Honda Civic

2016-2021 Honda Civic - Engine Air Filter Replacement

By Ray Delgado ✓ Certified Mechanic · Published Sep 21, 2026 · Updated Oct 22, 2026

🔧 Easy 10-20 minutes $20 DIY

Save $45 by doing it yourself! Shop cost: $65

Quick answer: Engine Air Filter Replacement on a 2016–2021 Honda Civic is rated Easy and takes about 10-20 minutes. You'll need 1 tool for this job, and parts cost about $20. This guide walks you through the full job step by step, including the mistakes to avoid.

Quick Video Tutorial

Parts You Need

Total Cost

$20.00

Part Name	Part Number	Price	Buy
Engine air filter	—	$20.00	Amazon

About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.

💡 Pro tip: Order all parts at once to save on shipping

Step-by-Step Instructions

Follow these steps carefully

Prep and locate the air box

Park level, set the brake, and shut off the engine. Find the airbox behind the radiator on the driver's-side front. Unclip the two passenger-side clips, then slide the lid to free the driver-side slip tabs — don't force it up.

Open the air filter housing

Unclip the two passenger-side clips, then slide the lid sideways to release the driver-side tabs. Lift the lid only as far as needed, keeping it tethered so it doesn't strain the intake tube. Note the lid's orientation for reinstallation.

🔧 Mechanic's note — Tom Becker

The slide-then-lift is the whole trick on this car — yank straight up and you'll snap a slip tab, and then the lid never seals evenly again. I nudge it toward the passenger side first, every time.

Remove the old filter and clean

Lift the filter out. Confirm the size by engine — 1.5T and 2.0L differ. Hold it to light; if you can't see through the pleats, it was overdue. Wipe the airbox with a cloth, keeping debris from the intake.

Install the new filter

Seat the new filter with the rubber seal fully in the groove, pleats facing as the old filter did. Finger-check the perimeter — no gaps. An unseated filter lets dirt into the 1.5T/2.0L, causing premature wear.

Reseal and verify

Close the lid evenly so the seal compresses uniformly, then refasten every clip or screw. Snug the intake tube clamps. Start the engine and listen 30 seconds — whistling means an air leak. Test drive. Interval: 15,000–20,000 miles.

All Done!

Test your repair before closing everything up. If something doesn't work right, double-check your steps.

⚠️ Common Mistakes to Avoid

• Installing the filter upside down or unseated so unfiltered air bypasses the element
• Leaving debris in the housing that then gets sucked into the intake
• Forcing clips/screws and cracking the plastic air box lid
• Reusing a heavily clogged filter instead of replacing it