🔧 Altima - Engine Air Filter Replacement

Replacing the engine air filter on your Altima is a simple beginner-friendly job. The air filter keeps dirt and debris out of the engine, and a clogged filter can reduce performance and fuel economy.

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

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⚠️ Safety & Precautions

• ⚠️ Park on a level surface and turn the engine off before opening the hood.
• ⚠️ Let the engine cool if it was recently driven.
• ⚠️ Do not drop leaves, sand, or tools into the air filter housing.
• ⚠️ Battery disconnect is not required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Clean shop towel
• Small flathead screwdriver

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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 your Altima on level ground.
• Shift to Park and set the parking brake.
• Turn the ignition off and remove the key fob from the vehicle area.
• Open the hood and support it securely.
• The air filter housing is the black plastic box near the front/right side of the engine bay, connected to the large intake tube.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Locate the Air Filter Housing

• Put on safety glasses and nitrile gloves.
• Stand at the front of your Altima and look for the rectangular black plastic air filter box.
• The air filter housing is the plastic box that holds the paper filter before air enters the engine.
• Use a clean shop towel to wipe loose dust from the top of the housing.
• Keep dirt out of the intake.

Step 2: Release the Air Filter Housing Clips

• Find the metal spring clips on the air filter housing cover.
• A spring clip is a small metal latch that holds the plastic cover closed.
• Use your fingers to flip the clips away from the cover.
• If a clip is tight, use a small flathead screwdriver gently to help release it.
• Do not pry hard against the plastic housing, because it can crack.

Step 3: Open the Housing Cover

• Use both hands to lift the air filter housing cover slightly.
• Do not force the intake tube or pull on any wiring nearby.
• You only need enough space to slide the old filter out.
• No bolts are normally removed for this filter replacement.

Step 4: Remove the Old Engine Air Filter

• Pull the old engine air filter straight out by hand.
• Note the direction it sits in the housing before removing it fully.
• Check the filter for heavy dirt, leaves, oil, or damage.
• Use a clean shop towel to gently wipe loose debris from the lower air box.
• Do not push dirt into the intake opening.

Step 5: Install the New Engine Air Filter

• Place the new engine air filter into the housing by hand.
• Make sure the rubber edge sits flat all the way around.
• The filter should not be bent, pinched, or sitting crooked.
• A flat seal prevents dirt leaks.

Step 6: Close the Air Filter Housing

• Lower the air filter housing cover back into place by hand.
• Make sure the cover tabs are seated correctly before closing the clips.
• Use your fingers to snap each metal spring clip back into place.
• If needed, use a small flathead screwdriver gently to guide a clip, but do not force it.
• There are no torque specs for the air filter housing clips because they are hand-latched.

Step 7: Final Visual Check

• Use a clean shop towel to wipe away any dust around the air box.
• Confirm the housing cover is fully closed.
• Confirm all clips are locked.
• Confirm no tools or towels are left in the engine bay.

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✅ After Repair

• Start the engine and let it idle for about 30 seconds.
• Listen for unusual hissing sounds near the air filter box, which can mean the cover is not sealed.
• If the engine sounds normal, shut it off and close the hood.
• No scan tool reset, battery registration, or infotainment reset is required for this repair.

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💰 DIY vs Shop Cost

Shop Cost: $45-$95 (parts + labor)

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

You Save: $30-$60 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.2-0.4 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.