🔧 Altima - Engine Air Filter Replacement

The engine air filter keeps dust and debris from entering your Altima’s 2.5L engine. Replacement requires opening the air-cleaner housing, exchanging the filter, and checking that the housing seals completely.

Difficulty Level: Beginner | Estimated Time: 10-15 minutes

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⚠️ Safety & Precautions

• Allow the engine to cool before working under the hood.
• Keep dirt, tools, and loose clothing away from the open intake.
• Do not start the engine while the air-cleaner housing is open.
• Battery disconnection is not required.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile work gloves
• Safety glasses
• LED inspection flashlight
• Microfiber cleaning cloth

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Engine air filter for 2.5L engine - Qty: 1

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📋 Before You Begin

• Park your Altima on level ground, select Park, apply the parking brake, and switch off the engine.
• Open the hood and support it securely.
• Wait until the engine compartment is cool enough to touch safely.
• Keep the new filter in its packaging until the housing is ready.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Locate the air-cleaner housing

• Wear the nitrile work gloves and safety glasses.
• Use the LED inspection flashlight to locate the large black plastic air-cleaner housing connected to the engine by the intake duct.
• The housing contains the rectangular engine air filter.

Step 2: Release the housing clips

• Release the metal retaining clips around the edge of the housing lid by hand.
• A retaining clip is a spring-loaded latch that holds the lid closed.
• Do not use excessive force or bend the clips.

Step 3: Lift and disengage the housing lid

• Lift the clipped edge of the lid by hand, then carefully disengage the locating tabs on the opposite edge.
• Move the lid only far enough to access the filter.
• Do not pull on the intake duct, wiring, or mass-airflow sensor connector.
• Take a photo of the filter orientation.

Step 4: Remove the old filter

• Lift the old engine air filter straight out by hand.
• Note which way its sealing edge and pleats sit in the housing.
• Use the LED inspection flashlight to check that no leaves or debris fall into the clean-air opening.

Step 5: Clean and inspect the housing

• Use the microfiber cleaning cloth to wipe loose dirt from the lower housing.
• Do not push dirt into the outlet leading toward the engine.
• Inspect the housing for broken clips, cracks, or a distorted sealing surface.
• Do not use compressed air because it can drive debris into the intake.

Step 6: Install the new filter

• Remove the new filter from its packaging with clean, gloved hands.
• Place it into the housing in the same orientation as the old filter.
• Run a finger around the filter’s rubber sealing edge to confirm it sits flat and is not folded.
• No fastener torque specification applies because the housing uses hand-operated clips.

Step 7: Close the housing

• Engage the housing lid’s locating tabs by hand before lowering the clipped edge.
• Check with the LED inspection flashlight that no filter material is pinched between the housing halves.
• Secure every retaining clip by hand. Each clip should lock firmly without forcing the lid.

Step 8: Perform a final inspection

• Use the LED inspection flashlight to verify that the housing seam is even on every side.
• Confirm the intake duct and nearby electrical connector remain secure.
• Remove the microfiber cleaning cloth and all other items from the engine compartment.
• Close the hood securely.

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✅ After Repair

• Start the engine and let it idle for about one minute.
• Listen for a loud rushing or whistling sound, which can indicate that the housing is not fully closed.
• Confirm that no warning light appears on the instrument panel.
• If the engine runs poorly, switch it off and recheck the filter seal, housing tabs, clips, intake duct, and airflow-sensor connector.
• No scan-tool reset or infotainment procedure is required.

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💰 DIY vs Shop Cost

Shop Cost: ₹2,500-₹5,000 (parts + labor)

DIY Cost: ₹1,200-₹3,000 (parts only)

You Save: ₹1,300-₹2,000 by doing it yourself!

Local labor and imported-part prices vary. This repair takes a shop approximately 0.2-0.3 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.