https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagecd6cce2d648a4d48968f715fd63dd449.txt

<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

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagecfb361ff6cc54b22b1f30236d8cb84ae.txt

Air Filter Box

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imageef32df7428f2425b87301667c1ec9bd3.txt

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

Air Flow Sensor

Air Intake Duct

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image172ed642cd5649409681f03dd9cb3946.txt

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

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image209fc8ff3521428080a60d3b94252f31.txt

Engine Air Filter

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image0a94f36fd961461aa4c6e7d9631359f8.txt

Intake Manifold

Intake Manifold Flap Actuator

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagea8dd964331f6410bbb12b303bd28806f.txt

Intercooler

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image36d1a21a946c40cd88807cac4f16802c.txt

Oxygen Sensor

Car Oxygen Sensor Price From $24.99 | A-Premium

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image2874032448264cc89fcfd3d32e8c4bd4.txt

Pressure Sensor

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image71b6637412454ac48505f8fe656d59da.txt

Throttle Body

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image95a81ec8105e4580ac078f34b15f7105.txt

Throttle Position Sensor

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagecff91ba9de7c4cb1932d544e82f0bf52.txt

Turbocharger

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagedbb3e2f10990462aa8dbd76eb04c2e54.txt

Turbocharger Oil Line

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image73f58f2321b2459fb6919729a345e546.txt

Vacuum Pump

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagec297244633284630939f3bdf6d50529b.txt

Air Filters & Intake Systems

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image72a54af151ea46ae9a947a6c57ba4aae.txt

Camshaft Adjuster

Camshaft Adjuster Cover

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image0c746ef912ad473cb3d80560a2d7e0a5.txt

Camshaft Timing Gear

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imageac12d53c77414db58a69179123e8d9a5.txt

Camshafts

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagecd9a40b4eb4546c08e376fe1b7fe5819.txt

Engine Valve Cover

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagec9ce5895dea14f089b6df8f067fd618b.txt

Harmonic Balancer

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image04246ffa3e3a4cca9c49011214ff6a6f.txt

Timing Belt Kit

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imageeeb3265558bd478fbac20059ec555c8c.txt

Timing Chain Kit

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image5af48eb273014fb5a489fe6bb5d14c1e.txt

Timing Cover

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image77c0478f7034493f91708786ed8fc52c.txt

Timing-Control Valve Solenoid

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imageff7f4b3ee7204c2d93e5d7f67976617f.txt

Valve Lifters Tappet

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image4ed51fbea7bc4818aa193ac0256a2f42.txt

Cams, Timing & Valvetrain

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image7e54d40a14d3470cb6c0e1820c263b93.txt

Belt Tensioner

Coolant Level Sensor

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imageef7c9a21b8f3481fafd9dc34deefd95e.txt

Crankcase Breather Hose

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image9a51da7735e648caa411dd19fe3015c6.txt

Crankcase Breather Valve

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image0f26e0448a8b4d72a06bbefb2c03ab27.txt

Crankshaft Position Sensor

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image69a46fdd403d4aee988b03c7ce172cb1.txt

Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagea7c063be923740da92163da876f8499f.txt

Flywheel

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image850df044e5234274b30aa010ee94dba5.txt

Oil Cooler

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imageebaf93bfb7c046d789a04bb0ac166235.txt

Oil Cooler Line

Oil Filler Cap

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image0a064858e22c4a7ba148c91978e1e5a8.txt

Oil Filter

Oil Filter Base

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image32b3ec52ad0249e58ed4ae5303d2f0e7.txt

Oil Filter Housing

Oil Filter Housing Cover

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagedef8d67a5f484cb2a2d594d50eb5b73a.txt

Oil Level Sensor

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagee113aaa2222d49448a25eb9c355123e1.txt

Oil Pan

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagec53c3f4f8470449caa2c14852afab4e6.txt

Oil Pump

Oil Pump Drive Gear Shaft

Oil Pump Pickup Tube

Cranks, Pistons, Oil & Components

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image5e4e697a02574c87ae0b5cfda83cd3e8.txt

Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

Engine Valve Covers & Ignition Coils Kits

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagec81e856f9df545e6a9f4b11411937f3d.txt

Glow Plug Relay Module

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image74cc3f1efb2d492684aac85a1f3bd96f.txt

Ignition Coil

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image57ca3e4e8038449ab08157e98602f20b.txt

Ignition Coils & Spark Plugs Kits

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image41d187d382d941e79a6cde28a906b960.txt

Ignition Distributor

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagedf6ffde1de044334b7320f4e47bcd934.txt

Ignition Starter Switch

Ignition Switch Actuator

Knock Detonation Sensor

Relay

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image50b27b80d8bb4caa97e9d3e5826bee31.txt

Spark Plug

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image27a6097036004160abe4de68c69ffa5c.txt

Spark Plug Wire

Electronic Control Modules, Ignition & Distributors

Engine Wiring Harness

Intake Manifold Repair Kit

Engine Components & Accessories

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image1bcab546ad734695ae275b9f5387598a.txt

Auxiliary Water Pump

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image134c67bba50247a988314c79d505b0d6.txt

Expansion Tank

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagefc43366b4109446c870f3055074a7e71.txt

Expansion Tank Mounting Plate

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imaged8199a7345cc43e88a5d14ecfb40b3a2.txt

Fuel Cooler

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image8ddda567a60c477c9a65cf6cdae4c553.txt

Radiator

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagee5529da684c54cf9bfe4c53e51d23532.txt

Radiator Hose

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagea7d3d16b9dd44ff080d87ecaf742aac8.txt

Radiator Support Assembly

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagedc0ba0ee1887431a9916caaffd9b039b.txt

Temperature Sensor

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagef5bb80a8289d4f4aa97ca832df326a98.txt

Turbo Hose

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image140a0119a00647d293656500204d1240.txt

Water Coolant Pipe

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image3f8f1ada421d4315bbe16795fddae29e.txt

Water Outlet

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imaged782e20933d346be8c825ba03dacd7a2.txt

Engine Cooling

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image3baa7d4f13b240f4b434c1a3ecef6b46.txt

Engine Mount

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagef4560369a27b422e8cae72e315cac999.txt

Engine Mounts

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image2bc060e1e59d437ca23550a9632b5785.txt

Catalytic Converter

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image9e0c65cba4314bd3831f99d93c5286bd.txt

EGR Valve

Emissions Fluid Pump

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image769619b70dfc4e12836a6e96b271bdf2.txt

Exhaust Gas Temperature Sensor

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image138fc20360e046148a51e1ac65c19920.txt

Exhaust Manifold

Fuel Tank Breather Valve

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagec580b273dbec426f9ab82d06997d1ac2.txt

Fuel Vapor Leak Detection Pump

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image276214f15ce14047994dab09b028b3d2.txt

Nitrogen Oxide Sensor

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagef458952c2a4d48fa8299c4f50b2e07d1.txt

Secondary Air Injection Check Valve

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagec2b2e038a9d248e4b05934cb21b38993.txt

Vapor Canister Vent Solenoid

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imageaf4ec04f6a89458b80a30eeb16eadbfb.txt

Exhaust & Emission Systems

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image97facfcbb86b43b4a9ad188ac8fa6c29.txt

Fuel Filter

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image95e2429ba38b48afaf44a5d71960a2b3.txt

Fuel Injection Control Module

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image35a18fc091664f2eb09491c55a106d58.txt

Fuel Injection Pressure Regulator

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image8f88e319f3214f1ca53d04303247e06d.txt

Fuel Injector

Fuel Injector Kit

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image03b440fe157e4382a3e5c145a3a5721f.txt

Fuel Injector Module Wiring Harness

Fuel Line Kit

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image91ddc33aff3241aeadb57bbe08a346b8.txt

Fuel Pump

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/imagef432a18989f549c2a49737a9ddf24a97.txt

Fuel Sending Unit

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image16546efb48224a6bb15be0aa836d48bc.txt

Fuel Tank Filler Neck Pipe

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image8b0e72eca99740429d7f4987e96df2f7.txt

Fuel Tank Strap

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image538dc8bcfb96428abc9247d043f29d80.txt

High Pressure Fuel Pump

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image73ba032c33ed4306ade78f43cf04508a.txt

Idle Air Control Valve

Mechanical Fuel Pump

Oil Pressure Relief Valve

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image79546737cea74c66b4c6ea8b0c0348c7.txt

Fuel Systems & Components

https://yt-prod-media-assets.s3.us-east-2.amazonaws.com/2022/item/description/image9e422512f0f44681934e568b8dc0892a.txt

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.

Mercedes-Benz E250 Exhaust Fluid Heater