Denso Auto Parts

Denso

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<h2><span style="font-size: 24px;">What does a car alternator do?</span></h2><p><span style="font-size: 14px;">The alternator keeps your automobile alive when the engine is running, however, the battery is necessary to start your car when it is not functioning. The majority of your car's electronic parts, such as the headlights, electric steering, power windows, windshield wipers, heated seats, dashboard gauges, and radio, are powered by the alternator while you're moving or idle. All of them receive direct current (DC) electricity from the alternator. Your car's battery is also charged while you're driving thanks to your alternator. </span></p><p><span style="font-size: 14px;">By converting mechanical energy into electrical energy, the alternator operates. When your engine is running, it drives a drive belt that is suspended from an alternator pulley. A set of magnets is spun around a coil by the alternator's rotor shaft, which is turned by the pulley. Alternating current (AC) is produced by these rotating magnets and circulated through the coil to the rectifier of the alternator. Your car's electrical systems are turned on by the rectifier, which transforms that AC power into DC power.</span></p><h2><span style="font-size: 24px;">How does a car alternator work?</span></h2><p><span style="font-size: 14px;">A car alternator is a device that converts mechanical energy into electrical energy. It is responsible for charging the battery and powering the electrical systems of the car. When the engine is running, the alternator is driven by a belt connected to the engine's crankshaft. Inside the alternator, there is a stationary magnetic field and a rotating coil of wire called the rotor. As the rotor spins, it generates an alternating current (AC) by electromagnetic induction.</span></p><p><span style="font-size: 14px;">The output of the alternator is regulated by a voltage regulator, which maintains a constant voltage output even as the engine speed varies. When the battery is fully charged, the voltage regulator reduces the output of the alternator to prevent overcharging the battery. When the engine is idling, the alternator output may not be enough to power all of the car's electrical systems, so the battery may be used to provide additional power. When the engine is running at higher speeds, the alternator output increases to meet the demand for electrical power.</span></p><h2 data-pm-slice="1 1 []"><span style="font-size: 18px;"><strong>How a Replacement Alternator Supports Your Vehicle&rsquo;s Electrical System</strong></span></h2><p><span data-color="var(--orange-10)">A replacement alternator converts mechanical energy from the engine into electrical energy to power the vehicle&rsquo;s electrical system. It supplies electrical power to electrical components and electrical accessories while keeping the battery charged. In most charging system designs, the alternator works with a voltage regulator to maintain stable output and support direct current needs across the vehicle when the engine is running.</span></p><h2><span style="font-size: 18px;"><strong>Bad Alternator Symptoms That Signal It&rsquo;s Time to Replace</strong></span></h2><p><span data-color="var(--orange-10)">A bad alternator often shows clear symptoms: flickering headlights, dim lights, weak electrical power, and failing electrical accessories such as power windows. You may also see a dead battery even after driving, because the charging system can&rsquo;t keep the battery charged. Other common causes that can look similar include a loose serpentine belt or poor connections&mdash;so it&rsquo;s smart to test the alternator and belt before ordering a replacement.</span></p><h2><span style="font-size: 18px;"><strong>How to Choose a Compatible Replacement Alternator and Order Fast</strong></span></h2><p><span data-color="var(--orange-10)">Select a replacement alternator by your vehicle&rsquo;s year, model, and engine, then confirm compatible fitment and connector details. Use the page search to shop by top brands, check store stock, compare reviews and difficulty notes, and add the right unit to cart. For easier installation, verify the serpentine belt condition and access under the hood, and confirm all charging system components are in good shape before you change parts.</span></p>

Alternator

Accelerator Cable

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Air Cleaner

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Air Filter Box

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Mass Air Flow Sensors/Car MAF Sensors | A-Premium

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 & Cabin Air Filter

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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Intake Manifold Repair Bracket

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Intake Manifold Runner Control Valve

Intake Manifold Seal Gasket

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Intercooler

Intercooler Hose

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Oxygen Sensor

Car Oxygen Sensor Price From $24.99 | A-Premium

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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

Turbocharger Wastegate Actuator

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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

Cylinder Head Gasket

Eccentric Shaft Actuator

Engine Timing Belt

Engine Timing Cover Gasket

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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

Crankcase Oil Separator

Crankcase Ventilation Cover

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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

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

Direct Ignition Coil Boot

Distributor Cap

Distributor Ignition Pickup

Distributor Rotor

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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

Ignition Control Module

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Ignition Distributor

Ignition Lock Cylinder

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Ignition Starter Switch

Ignition Switch Actuator

Kill Switch

Knock 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

Electric Engine Water Pump

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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.

Denso Alternator