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<h2>What is a harmonic balancer on a car?</h2>An engine harmonic balancer, also known as a crankshaft damper or vibration damper, is a device attached to the crankshaft of an engine to reduce vibration and stress on the engine components.&nbsp;The balancer consists of two parts, an outer ring and a hub, which are separated by a rubber or elastomeric material. The outer ring is attached to the engine's accessory drive, such as the alternator or power steering pump, while the hub is bolted to the crankshaft.<h2>How does a harmonic balancer work?</h2>As the engine runs, the harmonic balancer produces vibrations that can cause the crankshaft to flex and twist, leading to wear on engine bearings, crankshaft journals, and other components. The harmonic balancer absorbs these vibrations by oscillating in response to them, which reduces the stress and strain on the engine components.&nbsp;In addition to reducing vibration, the harmonic balancer also helps to dampen torsional vibrations, which are caused by the twisting of the crankshaft due to the force of the pistons. The rubber or elastomeric material in the balancer absorbs these torsional vibrations, which can cause damage to the engine over time if not properly addressed.<h2>Bad harmonic balancer symptoms</h2>Harmonic balancer failure can be a serious issue that can cause significant damage to the engine if left unaddressed. As described earlier, it can cause engine misalignment, excessive vibrations, engine damage, and belt slippage, which can lead to decreased performance or failure. It is essential to monitor the engine's performance and address any issues promptly to prevent further damage. Then what happens when a harmonic balancer fails?<ul><li>Engine misalignment: Harmonic balancer failure can cause the engine to become misaligned, which can lead to damage to the engine or the accessories.</li><li>Vibrations: A failed harmonic balancer can cause excessive vibrations that can damage various engine components such as the crankshaft, bearings, and seals.</li><li>Engine damage: Harmonic balancer failure can increase stress and fatigue on the engine's internal components, leading to damage or failure.</li><li>Belt slippage: A failed harmonic balancer can cause the accessory drive belts to slip or become loose, resulting in decreased performance or damage to the accessories.</li></ul>

Harmonic Balancer

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

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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Radiator Support Assembly

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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.

2012 Ford Expedition Harmonic Balancer

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