Def Injector for 2012-2014 Volkswagen Passat & More - Bosch 0444021021

Bosch 0444021021 DEF injector for the 2012-2014 Volkswagen Passat 4-cylinder 2.0L and other vehicles meters Diesel Exhaust Fluid (DEF) into the SCR system. Also called a DEF doser, it is a Bosch DNOx dosing module.

• Bosch DNOx dosing module that keeps to strict dosing limits to help meet current and future emission targets
• Dosing module designed for an operational life of up to 35,000 hours
• Adaptable spray pattern, droplet size and feed rate for DEF distribution that supports ammonia conversion
• Hydraulic DEF and coolant connections that can be adapted to suit individual customer needs

Quick facts

• Part: Bosch 0444021021 DEF injector
• Also called: DEF doser
• Fits: 2012-2014 Volkswagen Passat 4-cylinder 2.0L and other vehicles
• Condition: New

A DEF or emissions warning light, a stored dosing fault code or a DEF leak can mean the injector is failing. Before you replace it, rule out other sources of the warning, such as a low DEF level, a damaged connector or a fault elsewhere in the SCR system, because several of them show up the same way.

Fits

The vehicles it fits include the 2012-2014 Volkswagen Passat 4-cylinder 2.0L, the 2014-2016 Audi A8 Quattro V6 3.0L and the 2014-2015 Audi A6 Quattro V6 3.0L; each takes one.

Specifications

In the box

One DEF injector. Additional accessories are not included.

Interchange: 3C0131113C