🔧 Legacy - Cabin Air Filter Replacement

Your A/C and heater pull air through the cabin air filter before it enters the interior. Replacing a clogged filter improves airflow, helps reduce musty smells, and keeps dust/pollen down inside your Legacy.

Difficulty Level: Beginner | Estimated Time: 10-20 minutes

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⚠️ Safety & Precautions

• ⚠️ Turn the ignition off and remove the key before working under the dash.
• ⚠️ Don’t force plastic tabs—if it won’t move, re-check the clip location.
• ⚠️ Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Work gloves
• Safety glasses
• Flashlight
• Trim clip removal tool
• Phillips #2 screwdriver

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Cabin air filter - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Move the front passenger seat back to give yourself room.
• Have a trash bag ready for dusty debris.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open and clear the glove box

• Open the glove box and remove anything inside.
• Use a flashlight to look along the sides for the glove box “stops” (the little points that keep it from dropping all the way).

Step 2: Lower the glove box

• Gently push inward on the glove box sides with your hands to release the stops, then let the glove box swing down.
• If your Legacy has a small damper strap on the right side, carefully pop it off using a trim clip removal tool. (A damper strap is a small arm/strap that slows the glove box as it opens.)
• Go slow—plastic tabs can snap.

Step 3: Remove the cabin filter access cover

• Behind the glove box, locate the rectangular cabin filter cover (HVAC box).
• Release the side tabs by hand. If there are screws on your cover, remove them with a Phillips #2 screwdriver.

Step 4: Pull out the old cabin air filter

• Slide the filter straight out by hand.
• Keep it level as you remove it to avoid dumping leaves/dust into the blower box.

Step 5: Install the new cabin air filter (correct direction)

• Check the airflow arrow on the filter frame.
• Install it in the same direction as the old one came out (commonly AIRFLOW ↓ toward the floor on this setup).
• Make sure the filter sits flat and fully seated—no buckling.

Step 6: Reinstall the cover and glove box

• Reinstall the filter cover and snap the tabs back in place (or tighten screws with a Phillips #2 screwdriver until snug).
• Reconnect the glove box damper strap if equipped by pressing it back into place by hand (use a trim clip removal tool only if needed).
• Lift the glove box back up and gently push the sides inward to pass the stops back into position.

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✅ After Repair

• Start the engine and turn the fan to medium/high to confirm strong airflow.
• Switch between fresh air and recirculation to ensure the system sounds normal.
• If you hear ticking/rubbing, the filter may be mis-seated—recheck Step 5.

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💰 DIY vs Shop Cost

Shop Cost: $80-$160 (parts + labor)

DIY Cost: $15-$40 (parts only)

You Save: $40-$120 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.3-0.5 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.