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Guide to replacing the injectors on a Mercedes B-Class

Model: Mercedes Classe B W245, MK 1 - Years 2005-2011
Part: Fuel injectors

Today's guide will show you the main steps to disassemble and replace the fuel injectors on a Mercedes B-Class. First, open the bonnet and start by removing the air filter box, disconnecting the intake hose and unscrewing the fixing screws; then also remove the EGR valve, as shown in the video. At this point, remove the injector rail, then disassemble the individual injector; clean it or replace it if faulty, applying the reverse procedure for reassembly!

Updated on 24 September 2026 by ScegliAuto

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