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<h2>What is a DEF&nbsp;heater?</h2>
A car exhaust fluid heater, specifically designed for automotive applications, is a device used to heat the diesel exhaust fluid (DEF) in vehicles equipped with a selective catalytic reduction (SCR) system.&nbsp;So it is also called a DEF heater.
The purpose of a DEF heater is to ensure that the DEF remains at an optimal temperature for effective conversion and emission reduction. It prevents the DEF from freezing in cold weather conditions, as DEF freezes at temperatures below 12&deg;F (-11&deg;C). By heating the DEF, the heater maintains its fluidity and allows for proper atomization and reaction with NOx, resulting in more efficient emissions control.
DEF heaters are typically integrated into the vehicle's DEF tank or injection system. They are controlled by the vehicle's engine management system and operate automatically to maintain the required DEF temperature.
<h2>Are DEF heaters reliable in extreme weather conditions?</h2>
In extremely cold weather, DEF heaters may need to work harder or for longer durations to keep the DEF fluid warm. Some argue that in severe conditions, the performance of DEF heaters may be compromised, leading to potential system malfunctions or reduced effectiveness in emission control. This can raise concerns about the overall reliability of DEF heaters and their ability to function optimally in challenging environments.
Additionally, if DEF heaters do experience issues or fail to maintain the necessary temperature, it could lead to increased vehicle maintenance costs. However, it's important to note that advancements in technology and engineering have improved the reliability of DEF heaters in extreme weather conditions. Manufacturers are continually working to enhance the efficiency and robustness of DEF heating systems, ensuring they can withstand and perform effectively in various climates.

Exhaust Fluid Heater

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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

Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

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

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 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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High Pressure Fuel Pump

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Idle Air Control Valve

Mechanical Fuel Pump

Oil Pressure Relief Valve

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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.

Ford Exhaust Fluid Heater