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Guide to Replace the Glow Plugs on a Smart Fortwo 450 Diesel

Model: Smart Smart 450 - Years 1998-2007
Part: Glow plugs

In today's tutorial, you will learn how to remove and replace the glow plugs of the Smart Fortwo 450 Diesel engine, following the instructions below. First, move to the rear of the car and lift the floor to access the top of the engine; then disconnect the electrical cables or the connectors of the glow plugs to access them, as illustrated in the video. At this point, use a socket wrench to unscrew and remove them; simply replace them with the new ones of the correct type and thermal rating.

Updated on 30 May 2026 by ScegliAuto

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