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Dorman® 904-377 Diesel Exhaust Fluid (DEF) Heater

Manufacturer #904-377

Dorman® 904-377 Diesel Exhaust Fluid (DEF) Heater

Manufacturer #904-377

$232.89

~~$326.05~~

Save $93.16 (29%)

(4) In Stock

Get it between Wed, Aug 20 - Fri, Aug 22, 2025

E.P.A. Compliant Converters are not legal for sale or use in California or Colorado. Restrictions apply in New York and Maine.

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SKU	RB904377
Brand	Dorman®
Part Name	Diesel Exhaust Fluid (DEF) Heater
Part	# 904-377
Quantity Per Vehicle	1
Pack of	1
Condition	New

+ Mercedes-benz

Diesel Exhaust Fluid Heater
The factory DEF heater on certain vehicles often fails from fluid intrusion. This Dorman OE FIX solution modifies the OEM design to address this failure point and increase reliability.
Upgraded replacement - this diesel exhaust fluid (DEF) heater features additional protection from fluid intrusion
Restores performance - designed to match the fit and function of the original equipment part
Thoroughly tested - each design undergoes cyclical heater element fatigue testing
Trustworthy quality - backed by team of engineers in the United States

Inside Diameter (MM)	115
Mounting Hardware Included	Yes
Mounting Hardware Included	S├¡
Mounting Hardware Included	Oui
Electrical Connector Quantity	2
Housing Material	Plastic
Housing Material	Pl├istico
Housing Color	Black
Housing Color	Negro
Housing Color	Noir
Universal Or Specific Fit	Specific
Universal Or Specific Fit	Espec├¡fico
Electrical Connector Terminal Quantity	3
Electrical Connector Terminal Quantity	4
Contenidos del paquete	1 calentador de fluido de escape di├⌐sel (def)
Electrical Connector Gender	Male female
Electrical Connector Gender	Macho hembra
Electrical Connector Terminal Gender	Male female
Electrical Connector Terminal Gender	Macho hembra
Height (MM)	206 mm
Hose Included	No
Hose Included	Non
Inlet Fitting Type	Female
Inlet Fitting Type	Hembra
Level Sensor Type	Resistor
Material aislante del cable	Pl├istico
Outlet Fitting Type	Female
Outlet Fitting Type	Hembra
Package Contents	1 diesel exhaust fluid (def) heater
Tipo de sensor del nivel	Resistor
Wire Color	Black
Wire Color	White
Wire Color	Yellow
Wire Color	Blue
Wire Color	Red
Wire Color	Gray
Wire Color	Negro
Wire Color	Blanco
Wire Color	Amarillo
Wire Color	Azul
Wire Color	Rojo
Wire Color	Gris
Wire Insulation Material	Plastic

Shipping Policy

We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.

Return Policy

We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund.

Warranty Policy

Right parts, guaranteed. If you find any defects, simply notify us within the warranty period, and we’ll take care of it. Check out our Warranty Policy for more details.