Bosch Diesel Exhaust Fluid DEF Metering Module

The Bosch Diesel Exhaust Fluid (DEF) Metering Module, also called a DEF dosing module or DEF injector, is a key part of the selective catalytic reduction (SCR) system on modern diesel engines. It meters and sprays DEF into the exhaust stream so the SCR catalyst can convert harmful nitrogen oxide (NOx) emissions into harmless nitrogen and water vapor.

Key Features:

• Delivers a controlled, precisely metered amount of DEF into the exhaust for efficient NOx reduction
• Supports emissions compliance and helps the SCR system run as designed
• Engineered by Bosch, a leading supplier of diesel emissions and fuel system technology
• Built to withstand the heat, vibration and chemical exposure of exhaust system use
• Helps maintain fuel efficiency and avoid DEF system fault codes and derate conditions when replacing a failed unit

Bosch develops dosing technology in close cooperation with vehicle manufacturers, which is why its parts are widely used in original equipment and aftermarket applications. Choose the specific part number that matches your application from the available options.