🔧 Altima - Engine Air Filter Replacement

Your Altima’s engine air filter sits in the air box and keeps dust/debris out of the engine. Replacing it restores airflow and helps fuel economy and performance, especially in dusty areas.

Difficulty Level: Beginner | Estimated Time: 0.25-0.5 hours

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⚠️ Safety & Precautions

• ⚠️ Work on a cool engine to avoid burns.
• ⚠️ Keep fingers clear of the radiator fan area.
• ⚠️ Don’t drop dirt into the open air box or intake tube.
• ⚠️ Battery disconnect is not required.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Flat-blade screwdriver
• Shop towel
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Engine air filter - Qty: 1

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📋 Before You Begin

• Park on level ground and turn the engine off.
• Open the hood and let the engine bay cool down.
• Have a shop towel ready so you can wipe the air box if needed.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Locate the air filter housing

• Use a flashlight to find the black plastic air box (air filter housing) near the front/side of the engine bay.
• Look for metal clips around the seam where the air box lid meets the bottom half.

Step 2: Unclip the air box lid

• Release the metal clips by hand.
• If a clip is tight, gently pry it with a flat-blade screwdriver (a flat screwdriver has a straight, flat tip used for prying or turning slotted screws).

Step 3: Open the air box and remove the old filter

• Lift the air box lid just enough to access the filter. Don’t force it or pull on hoses.
• Pull the old air filter straight out.
• Tip: Note how the old filter sits.

Step 4: Clean the air box sealing surface

• Use a shop towel to wipe out loose dirt from the bottom half of the air box.
• Make sure the rubber sealing edge area is clean so the new filter can seal.

Step 5: Install the new air filter

• Place the new filter into the air box in the same orientation as the old one.
• Make sure it sits flat all the way around and isn’t pinched.

Step 6: Close the air box and re-latch the clips

• Lower the air box lid fully so the seam is even.
• Snap all clips back into place by hand (use the flat-blade screwdriver only if you need gentle help).
• Visually check that the lid is fully seated on every side.

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✅ After Repair

• Start your Altima and let it idle for 30 seconds.
• Listen for air leaks (a loud hissing/whistling can mean the air box isn’t sealed).
• Re-check that all clips are fully latched.

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💰 DIY vs Shop Cost

Shop Cost: $40-$90 (parts + labor)

DIY Cost: $15-$35 (parts only)

You Save: $25-$55 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.