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2018 Chevrolet Impala
2014 - 2020 Chevrolet Impala
V6 3.6L

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2018 Chevrolet Impala L4 2.5L Engine Air Filter Installation | TA46279, AF3174

2018 Chevrolet Impala L4 2.5L Engine Air Filter Installation | TA46279, AF3174

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T25
T25
Torx Star
8mm
8mm
Socket
or (5/16")
1/4
1/4
Ratchet
6"
6"
Extension
Wire Brush
Wire Brush
Nylon
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How to Replace the Engine Air Filter on a 2014-2020 Chevrolet Impala 2.5L (Engine: V6 3.6L)

Step-by-step DIY instructions with required tools, parts, torque specs, and safety tips for 2014, 2015, 2016, 2017, 2018, 2019, 2020

How to Replace the Engine Air Filter on a 2014-2020 Chevrolet Impala 2.5L (Engine: V6 3.6L)

Step-by-step DIY instructions with required tools, parts, torque specs, and safety tips for 2014, 2015, 2016, 2017, 2018, 2019, 2020

Orion
Orion

🔧 Impala - Engine Air Filter Replacement

The engine air filter is inside the black air-cleaner housing at the front passenger side of your Impala. Replacing it restores proper airflow and helps keep dust and debris out of the engine.

Difficulty Level: Beginner | Estimated Time: 15-25 minutes


⚠️ Safety & Precautions

  • ⚠️ Turn off the engine and allow it to cool before working under the hood.
  • 🧤 Wear gloves and safety glasses to protect against dirt and sharp edges.
  • 🔑 Keep the ignition switched off so the engine cannot be started.
  • 🔋 Battery disconnection is not required for this repair.
  • 🚫 Do not allow dirt, tools, or loose objects to enter the exposed intake duct.

🔧 Required Tools

You'll need the following tools for this repair:

  • Torx T25 screwdriver
  • 8mm socket
  • 1/4-inch drive ratchet
  • 1/4-inch drive 6-inch extension
  • Soft-bristle cleaning brush
  • Safety glasses
  • Nitrile work gloves

🔩 Required Parts

HowToo sells all the parts you need for this repair:

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

📋 Before You Begin

  • 🅿️ Park your Impala on level ground, select Park, engage the parking brake, and switch off the ignition.
  • 🌡️ Wait until the engine compartment is cool enough to touch safely.
  • 📱 No infotainment menu, scan tool, programming, or service-mode procedure is required.
  • 📦 Remove the new filter from its packaging and compare its shape with the old filter before installation.

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open and Secure the Hood

  • Pull the hood-release handle inside your Impala.
  • Release the secondary latch at the front edge of the hood, then raise the hood fully.
  • Confirm the hood supports remain firmly extended. No hand tool is required for this step.

Step 2: Locate the Air-Cleaner Housing

  • Find the large black plastic box near the front passenger-side corner of the engine compartment.
  • The wide black intake duct attached to this box confirms that you have located the air-cleaner housing.
  • Use a flashlight if needed to inspect the cover and duct connection.

Step 3: Loosen the Intake-Duct Clamp

  • Use an 8mm socket, 1/4-inch drive ratchet, and 6-inch extension to loosen the metal clamp where the intake duct meets the air-cleaner cover.
  • A hose clamp is the metal band that tightens the duct around its plastic connection.
  • Loosen the clamp only enough to slide the duct off. Do not remove the clamp from the duct.

Step 4: Release the Air-Cleaner Cover

  • Use a Torx T25 screwdriver to loosen the captive cover screws. Captive screws stay attached to the cover after they are loosened.
  • Loosen each screw evenly until the cover is free.
  • Do not force a screw after it becomes loose.

Step 5: Move the Cover Aside

  • Use both gloved hands to gently pull the intake duct from the air-cleaner cover connection.
  • Lift and move the cover only far enough to access the filter.
  • Avoid pulling on nearby wiring or the airflow-sensor harness.
  • Do not use a screwdriver to pry against the plastic housing.

Step 6: Remove the Old Filter

  • Use gloved hands to lift the old engine air filter straight out of the lower housing.
  • Notice how the filter sits in the housing before removing it completely.
  • Inspect the dirty side for leaves, heavy dust, or moisture that may indicate debris inside the housing.

Step 7: Clean and Inspect the Housing

  • Use a soft-bristle cleaning brush to collect loose leaves and dirt from the bottom of the housing.
  • Keep debris away from the open intake outlet.
  • Inspect the housing for cracks and verify that no debris remains on the filter-sealing surface.
  • Do not use compressed air because it can push dirt into the intake.

Step 8: Install the New Filter

  • Use gloved hands to place the new filter into the lower housing in the same orientation as the old filter.
  • Press gently around the filter’s rubber edge until it sits flat and evenly in its channel.
  • Make certain no section of the filter seal is folded or pinched.
  • A flat seal prevents unfiltered air leaks.

Step 9: Reinstall the Cover

  • Use both hands to position the cover over the filter without shifting the filter.
  • Make sure the cover is seated evenly around the complete housing edge.
  • Start every captive screw by hand, then tighten them evenly with the Torx T25 screwdriver.
  • Torque the air-cleaner cover screws to 2 Nm (18 in-lbs). Do not overtighten the plastic housing.

Step 10: Reconnect the Intake Duct

  • Use both hands to slide the intake duct completely over the air-cleaner cover connection.
  • Position the clamp behind the raised lip on the plastic connection.
  • Use the 8mm socket, 1/4-inch drive ratchet, and 6-inch extension to tighten the clamp.
  • Torque the intake-duct clamp to 5 Nm (44 in-lbs).
  • Gently tug the duct by hand to verify that it is secure.

Step 11: Perform a Final Inspection

  • Use a flashlight to confirm all screws are seated and the intake duct is fully attached.
  • Verify that no tools, packaging, or loose objects remain in the engine compartment.
  • Lower the hood and press it closed securely. No hand tool is required.

✅ After Repair

  • ✅ Start the engine and let it idle for approximately one minute.
  • 👂 Listen for a loud hissing or whistling sound, which can indicate a loose duct or improperly seated cover.
  • 🚨 Confirm that no new Check Engine message appears.
  • 🔍 If the engine runs rough, switch it off and recheck the duct, cover, and any nearby electrical connector before driving.
  • 🗓️ Inspect the filter at routine oil services and replace it more frequently in Sonīpat’s dusty driving conditions.

💰 DIY vs Shop Cost

Shop Cost: ₹1,500-₹3,000 (parts + labor)

DIY Cost: ₹800-₹1,800 (parts only)

You Save: ₹700-₹1,200 by doing it yourself!

Local labor rates vary. This repair typically takes a shop approximately 0.2-0.4 hour.


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