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<h2>What is an intake manifold?</h2>The intake manifold, also known as the inlet manifold, in an automobile can be likened to the conductor of an intricate symphony, orchestrating the harmonious flow of air into the engine's cylinders. Crafted with meticulous precision, it's a crucial bridge between the outside atmosphere and the heart of the vehicle.<h2>Intake manifold&nbsp;function</h2>Connected to the throttle body, the intake manifold regulates the volume of air entering the engine, thereby controlling engine speed and power output. Additionally, fuel-injected engines, mix the incoming air with fuel, a pivotal step in the combustion process. Some intake manifolds also incorporate Exhaust Gas Recirculation (EGR) passages for emissions control and may handle pressurized air from forced induction systems in high-performance engines. Intake manifolds are typically made of metal (aluminum or cast iron) or plastic. They have a complex design with passages and runners that help optimize airflow to the cylinders. Some intake manifolds are designed to improve air velocity for better performance.<h2>Intake manifold leak&nbsp;symptoms</h2>The symptoms of an intake manifold leak&nbsp;allow vehicle owners and mechanics to identify and address problems that can affect engine performance, efficiency, and longevity. Recognizing these symptoms early can help prevent more extensive and costly engine damage. Therefore, paying attention to intake manifold leak symptoms and promptly addressing any issues is a responsible and prudent approach to vehicle maintenance. Notice these:<ul><li>Poor engine performance: Reduced power, sluggish acceleration, and unresponsiveness.</li><li>Idling issues: Rough idling, irregular engine speed, or stalling when stationary.</li><li>Misfires: Engine shuddering, hesitation, or roughness, especially during acceleration.</li><li>Reduced fuel efficiency: Decreased gas mileage.</li><li>Check engine light (CEL): Illumination of the check engine light.</li><li>Hissing/whistling noise: Audible air escaping noise.</li><li>Excessive exhaust smoke: White or blue smoke from the exhaust.</li><li>Coolant loss: Depletion of coolant levels.</li><li>Oil contamination: Engine oil drawn into the intake system, leading to carbon deposits and fouled spark plugs.</li></ul>

Intake Manifold

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Air Cleaner

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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

Air Intake Resonator

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Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold Flap Actuator

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Intake Manifold Repair Bracket

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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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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 540i Intake Manifold