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Mercedes-Benz M113K specs: 5.4L (332 ci) 8-cylinder, 97 x 92 mm (3.8189 x 3.6220 in) bore and stroke, 9:1 compression. Rated 469 hp, 2003–2006.
The Mercedes-Benz M113K is oversquare — the 3.8189" bore exceeds the 3.622" stroke by 5.4% — a layout that favors airflow and RPM over leverage at the crank. The 3.622" stroke puts mean piston speed at 4,000 ft/min around 6,650 RPM, which is where a production bottom end is generally considered at its limit. Each of the 8 cylinders displaces 41.5 ci (680 cc).
9:1 is low by modern standards and generally happy on regular pump fuel.
It is one of 3 engines in the Mercedes-Benz 332ci family, all of them 332 ci — the differences between them are in compression, heads and rating, not displacement. 4 factory variants share these dimensions, rated at 469 hp across 2003–2006.
| Displacement | 332 ci / 5.4 L |
|---|---|
| Bore | 3.8189" |
| Stroke | 3.622" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 9:1 |
| Bore/stroke ratio | 1.054 |
| Fuel type | gas |
|---|---|
| Advertised HP | 469 hp |
| Years | 2003–2006 |
| Bore/stroke character | 1.054 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,622 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 41.5 ci |
| Static compression | 9:1 — low by modern standards, generally happy on regular pump fuel |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2003 | 469 hp | M113K |
| 2004 | 469 hp | M113K |
| 2005 | 469 hp | M113K |
| 2006 | 469 hp | M113K |
1 factory vehicle, 2003–2006. Each year opens that model's engine table.