Mercedes Sprinter DEF Injector Nozzle – OEM Replacement (2013–2018) | #0004901013

DEF Injector Nozzle | OEM Part #0004901013 / Bosch #0 444 021 031

Your Sprinter's BlueTec emissions system is only as reliable as its weakest component — and a failing DEF injector nozzle can trigger warning lights, force limp mode, and put your van out of service fast. This is the OEM-spec replacement that gets you back on the road with confidence.

What This Part Does

The DEF (Diesel Exhaust Fluid) injector nozzle precisely meters and atomizes urea solution into the exhaust stream, enabling the SCR (Selective Catalytic Reduction) system to convert harmful NOx emissions into harmless nitrogen and water. A clogged or failed nozzle disrupts this process entirely — leading to fault codes, reduced performance, and potential emissions test failures.

Why Choose This Over a Generic Alternative

This is the exact Bosch unit (0 444 021 031) sourced to OEM specification — not a budget knockoff with loose tolerances that clogs prematurely or leaks at the seal. When it comes to DEF system components, fitment precision and material quality aren't optional. The wrong part will fail again.

Fitment

• 2013–2017 Mercedes-Benz Sprinter with OM651 Engine
• 2014–2018 Mercedes-Benz Sprinter with OM642 Engine

Includes: DEF injector nozzle assembly

OEM Part Numbers: 0004901013 | 000 490 10 13 Bosch Reference: 0 444 021 031