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Mercedes-Benz M104 specs: 3.6L (220 ci) 6-cylinder, 91 x 92.4 mm (3.5827 x 3.6378 in) bore and stroke, 10.5:1 compression. Built 1995–1997.
The Mercedes-Benz M104 is close to square: 3.5827" bore against 3.6378" stroke, within 1.5%, which splits the difference between a high-revving layout and a torque layout. The 3.6378" stroke puts mean piston speed at 4,000 ft/min around 6,600 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 36.7 ci (601 cc).
10.5:1 is in the range that usually runs on pump premium.
3 factory variants share these dimensions across 1995–1997.
| Displacement | 220 ci / 3.6 L |
|---|---|
| Bore | 3.5827" |
| Stroke | 3.6378" |
| Cylinders | 6 |
| Configuration | I6 |
| Compression ratio | 10.5:1 |
| Bore/stroke ratio | 0.985 |
| Fuel type | gas |
|---|---|
| Years | 1995–1997 |
| Bore/stroke character | 0.985 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,638 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 36.7 ci |
| Static compression | 10.5:1 — in the range that usually runs on pump premium |
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 |
|---|---|---|
| 1995 | — | M104 |
| 1996 | — | M104 |
| 1997 | — | M104 |
1 factory vehicle, 1995–1997. Each year opens that model's engine table.