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<h2>What does the cabin air filter do?</h2>
&nbsp;
The primary role of a cabin air filter is to enhance the air quality within the vehicle's interior. It filters the air that comes from outside, trapping and removing various contaminants and particles, such as dust, pollen, mold spores, and other fine airborne debris. This filtration process ensures that the air inside the vehicle is cleaner and healthier to breathe.&nbsp;For individuals who have allergies, a cabin air filter is particularly valuable. It helps reduce allergens, such as pollen and mold, making the cabin environment more comfortable and suitable for passengers with allergies. The cabin air filter also plays a role in safeguarding the vehicle's HVAC system. It prevents particles and debris from entering the HVAC components, helping to maintain the system's efficiency and prolong its lifespan.
&nbsp;
<h2>Cabin air filter replacement</h2>
&nbsp;
Replacing the cabin air filter is a relatively simple process that you can often do yourself. Refer the following steps:
<ol>
<li>Locate the filter: Find the cabin air filter housing, usually behind the glove compartment or under the dashboard.</li>
<li>Gather tools: Get a screwdriver or socket set for removing housing cover fasteners.</li>
<li>Open housing: Remove screws or clips securing the housing cover and open it.</li>
<li>Remove old filter: Slide out the old filter, noting its airflow direction.</li>
<li>Clean housing: Check for debris and clean the housing interior.</li>
<li>Install new filter: Insert the new filter, ensuring the correct orientation.</li>
<li>Close Housing: Carefully seal the housing, reattaching screws or fasteners.</li>
<li>Test HVAC: Turn on the HVAC system to confirm improved airflow.</li>
<li>Dispose of old filter: Dispose of the old filter following local regulations.</li>
<li>Record replacement: Note the date and mileage for future reference.</li>
</ol>

Cabin Air Filter

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Air Filter Box

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Air Flow Sensor

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Air Intake Duct

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Air Intake Hose

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Air Intake Manifold Actuator Control Solenoid

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Air Intake Manifold Flap Adjuster

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Air Intake Manifold Runner Control Sensor

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Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

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Intake Manifold Flap Actuator

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Intercooler

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Oxygen Sensor

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Pressure Sensor

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Throttle Body

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Throttle Position Sensor

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Turbocharger

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Turbocharger Oil Line

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Vacuum Pump

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Air Filters & Intake Systems

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Camshaft Adjuster

Camshaft Adjuster Cover

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Camshaft Timing Gear

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Camshafts

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Engine Valve Cover

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Harmonic Balancer

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Timing Belt Kit

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

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Valve Lifters Tappet

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Cams, Timing & Valvetrain

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Belt Tensioner

Coolant Level Sensor

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Crankcase Breather Hose

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Crankcase Breather Valve

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Crankshaft Position Sensor

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Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

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Flywheel

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Oil Cooler

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Oil Cooler Line

Oil Filler Cap

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Oil Filter

Oil Filter Base

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Oil Filter Housing

Oil Filter Housing Cover

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Oil Level Sensor

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Oil Pan

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Oil Pump

Oil Pump Drive Gear Shaft

Oil Pump Pickup Tube

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Cranks, Pistons, Oil & Components

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Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

Engine Valve Covers & Ignition Coils Kits

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Glow Plug Relay Module

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Ignition Coil

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Ignition Coils & Spark Plugs Kits

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Ignition Distributor

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Ignition Starter Switch

Ignition Switch Actuator

Knock Detonation Sensor

Relay

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Spark Plug

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Spark Plug Wire

Electronic Control Modules, Ignition & Distributors

Engine Wiring Harness

Intake Manifold Repair Kit

Engine Components & Accessories

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Auxiliary Water Pump

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Expansion Tank

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Expansion Tank Mounting Plate

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Fuel Cooler

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Radiator

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Radiator Hose

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Radiator Support Assembly

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Temperature Sensor

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Turbo Hose

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Water Coolant Pipe

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Water Outlet

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Engine Cooling

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Engine Mount

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Engine Mounts

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Catalytic Converter

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EGR Valve

Emissions Fluid Pump

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Exhaust Fluid Heater

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Exhaust Gas Temperature Sensor

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Exhaust Manifold

Fuel Tank Breather Valve

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Fuel Vapor Leak Detection Pump

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Nitrogen Oxide Sensor

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Secondary Air Injection Check Valve

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Vapor Canister Vent Solenoid

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Exhaust & Emission Systems

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Fuel Filter

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Fuel Injection Control Module

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Fuel Injection Pressure Regulator

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Fuel Injector

Fuel Injector Kit

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Fuel Injector Module Wiring Harness

Fuel Line Kit

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Fuel Pump

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Fuel Sending Unit

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Fuel Tank Filler Neck Pipe

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Fuel Tank Strap

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Fuel Systems & Components

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The engine comprises many essential elements such as the lower cylinder block, upper cylinder head(s), and the cooling & lubricating systems. With A-Premium aftermarket engine components, you can expect that your engine deliver years of reliable performance. We offer a diverse selection of engine components from air filters and ignition coils (kits) to fuel pumps to cater to your needs.

Audi S4 Cabin Air Filter