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<h2>What is the fuel filter in a car?</h2>As an important component in the fuel system of a vehicle, A fuel filter helps to remove impurities and contaminants from the gasoline or diesel fuel before it reaches the engine. It is typically located between the fuel tank and the engine.The primary purpose of the fuel filter is to prevent dirt, debris, rust, and other contaminants from entering the engine's fuel injectors, carburetor, or fuel pump. These impurities can clog the fuel system and cause engine performance issues, such as rough idling, stalling, or reduced power.Fuel filters usually have a lifespan of around 30,000 miles, although some can even last for over 100,000 miles. They are positioned between the fuel tank and fuel injection system and work by filtering out contaminants from the gasoline before it reaches the engine. If these particles are not removed, they can obstruct the small openings in the carburetor and fuel injectors of a vehicle. This obstruction can restrict the amount of fuel reaching the engine, resulting in issues like engine power loss, poor fuel efficiency, misfires, and stalling. Hence, when fuel filters get clogged, it can trigger OBD-II codes indicating fuel injection system errors.<h2>What are the signs of a fuel filter going out?</h2>A bad fuel filter in a vehicle can cause several signs, such as engine performance issues like a decrease in power, acceleration, and overall performance. It can also cause a decrease in fuel efficiency, making the vehicle experience a decrease in miles per gallon. Other signs may include hard starting, especially after the vehicle has been sitting for a while, engine misfires, causing the engine to run rough or produce vibrations, and a check engine light that may come on due to fuel system sensors detecting a problem with fuel pressure or flow.<h2>How to change the fuel filter?</h2>Replacing the fuel filter is a necessary maintenance task that helps keep your vehicle running smoothly. To replace the fuel filter, you'll need a new fuel filter, a socket wrench or pliers, a drip pan, and safety glasses.First, locate the fuel filter, which is typically found along the fuel lines either in the engine compartment or underneath the vehicle. Before replacing the filter, relieve the fuel system pressure to prevent fuel from spraying out.Next, use a socket wrench or pliers to loosen the bolts or clamps holding the fuel filter in place. Remove the old fuel filter from the fuel line and install the new one in the correct direction according to the arrow on the filter. Tighten the bolts or clamps to secure the new filter.Once the new filter is in place, reconnect the fuel lines and start the engine to check for any leaks or issues. Wear safety glasses during this step. Finally, dispose of the old fuel filter properly, according to local regulations.It's important to refer to your vehicle's owner's manual for specific instructions and details on replacing the fuel filter, as the process may vary depending on the make and model of your vehicle. If you are not confident in your ability to replace the fuel filter yourself, it is recommended to have it done by a qualified mechanic.

Fuel Filter

Air Cleaner

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Air Filter Box

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Air Flow Sensor

Air Intake Duct

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Air Intake Hose

Air Intake Manifold Actuator Control Solenoid

Air Intake Manifold Flap Adjuster

Air Intake Manifold Runner Control Sensor

Air Intake Resonator

Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

Intake Manifold Flap Actuator

Intake Manifold Repair Bracket

Intake Manifold Runner Control Valve

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Intercooler

Intercooler Hose

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Oxygen Sensor

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Pressure Sensor

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Supercharger Pulley Drive Unit

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Supercharger Snout Rebuild Kit

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Throttle Body

Throttle Cable

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Throttle Position Sensor

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Turbocharger

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Turbocharger Gasket Kit

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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

Camshaft Kit

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Camshaft Timing Gear

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Camshafts

Chain Tensioner Adjuster

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Cylinder Head

Cylinder Head Assembly

Eccentric Shaft Actuator

Engine Timing Belt

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Engine Valve Cover

Engine Valve Cover Gasket

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Harmonic Balancer

Rocker Arm

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Rocker Arm Shaft Lifter Assembly

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Timing Belt Kit

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Timing Chain Gear

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

Valve Cover Gasket

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Valve Lifter Guides

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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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Crank Installer Tool

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Crankcase Breather Hose

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Crankcase Breather Valve

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Crankshaft Position Sensor

Crankshaft Pulley

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Engine Oil Dipstick

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Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

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Flywheel

Harmonic Balancer Crankshaft Hub

Knock Sensor

Oil Baffle

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Oil Cooler

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Oil Cooler Line

Oil Drip Pan

Oil Filler Cap

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Oil Filter

Oil Filter Base

Oil Filter Cover

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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

Oil Separator

Serpentine Belt

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Cranks, Pistons, Oil & Components

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Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

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Electronic Ignition System

Engine Valve Covers & Ignition Coils Kits

Glow Plug

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Glow Plug Relay Module

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Ignition Coil

Ignition Coils & Spark Plugs & Wires Kits

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Ignition Coils & Spark Plugs Kits

Ignition Coils & Wires Kits

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Ignition Distributor

Ignition Lock Cylinder

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Ignition Starter Switch

Ignition Switch Actuator

Kill Switch

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

Pulley

Engine Components & Accessories

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Active Grille Shutter Actuator

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Auxiliary Water Pump

Drive Motor Inverter Cooler

Electric Engine Water Pump

Engine Coolant Air Bleeder Valve

Engine Coolant Pipe

Engine Coolant Shut Off Valve

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Expansion Tank

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Expansion Tank Mounting Plate

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Fan Pulley Bracket

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Fuel Cooler

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Overflow Hose Connector

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Radiator

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Radiator Control Fan Module

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Radiator Core Support Skid Bar Plate

Radiator Fan Cooling Motor

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Radiator Hose

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Engine Cooling

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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.

BMW 420i Fuel Filter