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Exhaust Fluid Heater

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Diesel Exhaust Fluid (DEF) Heater for Ford Transit-150 Transit-250 15-19 L5 3.2L

Diesel Exhaust Fluid (DEF) Heater for Ford Transit-150 Transit-250 15-19 L5 3.2L

A-Premium
Part #APEFH018
Fuel: DIESEL
Transit-350 HD,Transit-350,Transit-250,Transit-150
Check if this fits your vehicle
$
213.99
Ships within 24 hours
A-Premium APEFH015 Diesel Exhaust Fluid (DEF) Heater

A-Premium APEFH015 Diesel Exhaust Fluid (DEF) Heater

A-Premium
Part #APEFH015
DIESEL
Savana 4500,Savana 2500,Savana 3500,Express 2500,Express 3500,Express 4500
Check if this fits your vehicle
$
167.99
Ships within 24 hours
A-Premium APEFH014 Diesel Exhaust Fluid (DEF) Heater

A-Premium APEFH014 Diesel Exhaust Fluid (DEF) Heater

A-Premium
Part #APEFH014
DIESEL
Savana 4500,Savana 2500,Savana 3500,Express 2500,Express 3500,Express 4500
Check if this fits your vehicle
$
164.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz Freightliner Sprinter 2500

Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz Freightliner Sprinter 2500

A-Premium
Part #APEFH017
Fuel: DIESEL
Sprinter 3500,Sprinter 2500
Check if this fits your vehicle
$
258.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Ford F-250 F-350 F-450 Super Duty 11-16

Diesel Exhaust Fluid (DEF) Heater for Ford F-250 F-350 F-450 Super Duty 11-16

A-Premium
Part #APEFH006
Diesel
F-350 Super Duty,F-450 Super Duty,F-250 Super Duty
Check if this fits your vehicle
$
152.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for GMC Sierra Chevy Silverado 2500 HD 3500 HD

Diesel Exhaust Fluid (DEF) Heater for GMC Sierra Chevy Silverado 2500 HD 3500 HD

A-Premium
Part #APEFH007
Diesel
Sierra 2500 HD,Silverado 2500 HD,Sierra 3500 HD,Silverado 3500 HD
Check if this fits your vehicle
$
188.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz S350 2012-2013 V6 3.0L

Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz S350 2012-2013 V6 3.0L

A-Premium
Part #APEFH016
V6 3.0L, W221, Fuel: DIESEL
S350
Check if this fits your vehicle
$
166.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Mercedes-Ben W204 GLK250 2013-2015

Diesel Exhaust Fluid (DEF) Heater for Mercedes-Ben W204 GLK250 2013-2015

A-Premium
Part #APEFH002
L4 2.1L, W204, Sport Utility, Diesel
GLK250
Check if this fits your vehicle
$
153.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz X164 GL320 07-09 GL350 10-12

Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz X164 GL320 07-09 GL350 10-12

A-Premium
Part #APEFH003
GL350,GL320
Check if this fits your vehicle
$
184.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for BMW E70 X5 xDrive35d 2009-2013

Diesel Exhaust Fluid (DEF) Heater for BMW E70 X5 xDrive35d 2009-2013

A-Premium
Part #APEFH004
L6 3.0L, xDrive35d, Sport Utility, Diesel
X5
Check if this fits your vehicle
$
168.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Ford F-350 F-450 F-550 Super Duty 2011-2016

Diesel Exhaust Fluid (DEF) Heater for Ford F-350 F-450 F-550 Super Duty 2011-2016

A-Premium
Part #APEFH005
Diesel
F-350 Super Duty,F-450 Super Duty,F-550 Super Duty
Check if this fits your vehicle
$
185.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz W166 W164 ML250 ML350 GLE300d

Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz W166 W164 ML250 ML350 GLE300d

A-Premium
Part #APEFH009
Diesel
ML250,GLE300d,ML350
Check if this fits your vehicle
$
168.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz X164 GL350 2013-2016

Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz X164 GL350 2013-2016

A-Premium
Part #APEFH011
V6 3.0L, X164, Sport Utility, Diesel; with Diesel Exhaust Treatment Code U42
GL350
Check if this fits your vehicle
$
163.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Freightliner Mercedes-Benz Sprinter 2500

Diesel Exhaust Fluid (DEF) Heater for Freightliner Mercedes-Benz Sprinter 2500

A-Premium
Part #APEFH001
Diesel; Not fit L4 2.1L Diesel
Sprinter 3500,Sprinter 2500
Check if this fits your vehicle
$
170.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Porsche Cayenne Volkswagen Touareg 11-16

Diesel Exhaust Fluid (DEF) Heater for Porsche Cayenne Volkswagen Touareg 11-16

A-Premium
Part #APEFH008
Diesel
Cayenne,Touareg
Check if this fits your vehicle
$
110.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for VW Volkswagen Passat 2012-2014

Diesel Exhaust Fluid (DEF) Heater for VW Volkswagen Passat 2012-2014

A-Premium
Part #APEFH012
L4 2.0L, Sedan, Diesel
Passat
Check if this fits your vehicle
$
129.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz W212 E250 14-15 E350 11-13

Diesel Exhaust Fluid (DEF) Heater for Mercedes-Benz W212 E250 14-15 E350 11-13

A-Premium
Part #APEFH010
Diesel
E250,E350
Check if this fits your vehicle
$
163.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater for VW Volkswagen Touareg 2009-2010

Diesel Exhaust Fluid (DEF) Heater for VW Volkswagen Touareg 2009-2010

A-Premium
Part #APEFH013
V6 3.0L, Sport Utility, Diesel
Touareg
Check if this fits your vehicle
$
149.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater - Bosch 0444021058

Diesel Exhaust Fluid (DEF) Heater - Bosch 0444021058

Bosch
Part #0444021058
F-350 Super Duty,F-450 Super Duty,F-250 Super Duty,Transit-350 HD,Transit-350,Transit-250,Transit-150
Check if this fits your vehicle
$
200.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600252

Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600252

Bosch
Part #F01C600252
335d
Check if this fits your vehicle
$
405.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600301

Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600301

Bosch
Part #F01C600301
Cayenne,Touareg
Check if this fits your vehicle
$
289.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600244

Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600244

Bosch
Part #F01C600244
ML250,ML350
Check if this fits your vehicle
$
428.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600251

Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600251

Bosch
Part #F01C600251
X5
Check if this fits your vehicle
$
244.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600241

Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600241

Bosch
Part #F01C600241
E250,E350
Check if this fits your vehicle
$
544.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600240

Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600240

Bosch
Part #F01C600240
S350
Check if this fits your vehicle
$
463.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600238

Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600238

Bosch
Part #F01C600238
GLK250
Check if this fits your vehicle
$
496.99
Ships within 24 hours
Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600228

Diesel Exhaust Fluid (DEF) Heater - Bosch F01C600228

Bosch
Part #F01C600228
Sprinter 3500,Sprinter 2500
Check if this fits your vehicle
$
391.99
Ships within 24 hours
Spectra Premium EM1206URH Diesel Exhaust Fluid (DEF) Heater

Spectra Premium EM1206URH Diesel Exhaust Fluid (DEF) Heater

Spectra Premium
Part #EM1206URH
Sierra 2500 HD,Silverado 2500 HD,Sierra 3500 HD,Silverado 3500 HD
Check if this fits your vehicle
$
306.99
Ships within 24 hours
Spectra Premium EM1209URH Diesel Exhaust Fluid (DEF) Heater

Spectra Premium EM1209URH Diesel Exhaust Fluid (DEF) Heater

Spectra Premium
Part #EM1209URH
Savana 4500,Savana 2500,Savana 3500,Express 2500,Express 3500,Express 4500
Check if this fits your vehicle
$
446.99
Ships within 24 hours
Spectra Premium EM1104URH Diesel Exhaust Fluid (DEF) Heater

Spectra Premium EM1104URH Diesel Exhaust Fluid (DEF) Heater

Spectra Premium
Part #EM1104URH
Touareg
Check if this fits your vehicle
$
281.99
Ships within 24 hours
1-20 of 35 Results
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What is a DEF heater?

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. 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°F (-11°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.

Are DEF heaters reliable in extreme weather conditions?

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.