🔧 ES 350 - Engine Air Filter Replacement

Your ES 350’s engine air filter cleans the air before it enters the engine. Replacing a dirty filter helps maintain smooth power, fuel economy, and protects the engine from dust and grit.

Difficulty Level: Beginner | Estimated Time: 0.2-0.5 hours

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⚠️ Safety & Precautions

• ⚠️ Work with the engine off and cool to avoid burns.
• ⚠️ Keep dirt and tools out of the open air box and intake tube.
• ⚠️ Do not touch or spray anything into the airflow/MAF area; the MAF (mass airflow sensor) measures incoming air and is easy to damage.
• ⚠️ Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Shop towel
• Flashlight
• 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 on level ground, shift to Park, and set the parking brake.
• Open the hood and let the engine bay cool for a few minutes.
• Have a towel ready to catch loose dust.

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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 with a large intake tube attached.
• Place a shop towel nearby to wipe dust.

Step 2: Unclip the air box cover

• Put on nitrile gloves and safety glasses.
• Release the metal/plastic retaining clips around the air box by hand.
• If a clip is tight, gently help it with a small flathead screwdriver (do not pry hard).

Step 3: Open the housing

• Lift the air box lid up enough to remove the filter.
• Don’t yank the lid—move it just enough.

Step 4: Remove the old filter

• Pull the old filter straight out by hand.
• Use a flashlight to look inside the lower air box for leaves or heavy dirt.

Step 5: Clean the air box sealing surface

• Wipe the rim/sealing surface with a shop towel so the new filter seals well.
• Do not push debris into the intake tube.

Step 6: Install the new air filter

• Insert the new filter into the lower air box by hand.
• Make sure it sits fully flat in the tray and the gasket edge is evenly seated all the way around.

Step 7: Close and latch the air box

• Lower the air box lid back into place by hand.
• Re-engage all the retaining clips by hand. If needed, use the small flathead screwdriver gently to help a stubborn clip snap closed.

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✅ After Repair

• Start the engine and let it idle for 15–30 seconds.
• Listen for hissing/whistling (a sign the air box isn’t sealed).
• Re-check that all clips are fully latched and the lid is seated evenly.

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💰 DIY vs Shop Cost

Shop Cost: $50-$120 (parts + labor)

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

You Save: $35-$85 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.2-0.5 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.