The Mercedes-Benz M113 (and similar M155) engine is a V8 automobile piston engine family used in the 2000s. It was based on the similar M112 V6 introduced in 1998.
The standard Mercedes-Benz M113s are built in Untertürkheim, Germany, while the AMG E55 versions are assembled at AMG's Affalterbach, Germany plant. M113s have aluminum engine blocks and aluminum SOHC cylinder heads with two spark plugs per cylinder. The cylinders are lined with silicon/aluminum, and the heads have 3 valves per cylinder. Other features include SFI fuel injection, fracture-split forged steel connecting rods, a one-piece cast camshaft, and a magnesium intake manifold.
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