Bosch 0444021031 Diesel Exhaust Fluid DEF Metering Module

The Bosch 0444021031 Diesel Exhaust Fluid (DEF) Metering Module is a precision-engineered emission control component that controls the injection of diesel exhaust fluid into the exhaust stream. This OE-quality module plays a critical role in reducing nitrogen oxide (NOx) emissions, helping diesel vehicles meet strict emissions standards while maintaining optimal performance.

Key Features:

• OE-quality metering module designed for 2014-2015 Mercedes-Benz and Freightliner Sprinter 2500/3500 2.1L diesel models
• Precision DEF injection control for effective NOx emission reduction
• Features two electrical connectors with blade terminals for reliable connections
• Dual hose connections (male and female) for proper DEF fluid delivery
• Black housing designed for durability in harsh under-vehicle conditions
• Direct replacement for Mercedes-Benz OEM part numbers 000 490 10 13 and 0004901013

Technical Specifications:

• Dimensions: 4.06 inches (L) x 2.24 inches (W) x 2.24 inches (H)
• Electrical Connectors: 2 blade-type connectors (1 male, 1 female)
• Hose Connections: Female and male fittings
• Color: Black

Common diagnostic trouble codes (DTCs) associated with DEF module failures include P20E8, P20E9, P20EA, and P204F. Symptoms of a failing DEF module may include illuminated check engine lights, decreased engine performance, increased diesel fuel consumption, and reduced power output. This genuine Bosch replacement module restores proper DEF system operation and helps clear these fault codes.