Baudouin M Series engines power generator sets and marine propulsion worldwide. The most requested baudouin engine specifications in our export business are the 6M33 and the 12M26, because their parts – liners, head gaskets, bearings and pumps – are ordered by engine model. Here is the official data from the manufacturer datasheets.
Baudouin M Series Specifications Table

| Model | Configuration | Bore x Stroke (mm) | Displacement (L) | Compression Ratio | Typical Rating |
|---|---|---|---|---|---|
| 6M33 | 6 inline, 4 valves/cyl | 150 x 185 | 19.6 | 15:1 | up to 650 hp marine @ 1800 rpm; ~750 kVA gensets |
| 12M26 | V12, 90 degree | 150 x 150 | 31.8 | 15:1 | ~960-1025 kVA gensets; marine auxiliary |
6M33 Specifications in Detail
The Baudouin 6M33 is a turbocharged and intercooled inline six with four valves per cylinder, a 150 mm bore and 185 mm stroke for 19.6 litres, and a 15:1 compression ratio. Engine dimensions are about 2278 x 1138 x 1571 mm. Marine versions such as the 6M33C650-18 deliver 650 hp at 1800 rpm with IMO Tier II certification (CCS/BV/IRS class), and generator versions run around 750 kVA at 1500 rpm. Fuel consumption is about 198 g/kWh.
12M26 Specifications in Detail
The Baudouin 12M26 is a 90-degree V12 with a 150 mm bore and 150 mm stroke, 31.8 litres of displacement and a 15:1 compression ratio. It is the workhorse of large 960-1025 kVA generator sets and marine auxiliary applications, running at 1500/1800 rpm depending on the market.
Which Parts Fit Which Baudouin Engine
- Both engines share the 150 mm bore, but the different strokes (185 vs 150 mm) mean pistons, liners and crankshafts are never interchangeable.
- The 6M33 cylinder head gasket and liner kit are the fastest-moving service items – see our Baudouin full gasket set.
- Main bearing sets and Baudouin M Series crankshafts are stocked for both models.
Frequently Asked Questions
What is the Baudouin 6M33 displacement?
The Baudouin 6M33 displacement is 19.6 litres from a 150 mm bore and 185 mm stroke, with four valves per cylinder and a 15:1 compression ratio.
Is the Baudouin 12M26 a V-engine?
Yes, the 12M26 is a 90-degree V12 with a 150 x 150 mm bore and stroke and 31.8 litres of displacement, used mainly in large generator sets.
EPID Diesel Engine Parts supplies genuine-quality M Series components from stock. Check the Baudouin engine parts range and message us on WhatsApp with your engine serial number for a quote.

