Hatz has been building engines in Ruhstorf, Bavaria, for well over a century, and the small industrial diesel is what they are known for. Air- and water-cooled, one to four cylinders, 1.5 to 64 kW. You find them in construction machinery, compressors, pumps, generator sets, agricultural machinery, industrial trucks, commercial vehicles and boats.
BMG Power Systems is the official Hatz distributor for Estonia, Latvia and Lithuania. We sell new engines, supply genuine parts and service Hatz engines in all three countries.

The Hatz range: compact diesels from single-cylinder to four-cylinder
Where Hatz fits
Hatz covers the compact end of our industrial range. When a machine needs a few kilowatts in a tight space, a Hatz single-cylinder is often the obvious choice. When it needs 20 to 60 kW, the H-series gives you a three- or four-cylinder engine that is lighter than anything else in its class. If you build machines, talk to us early: we can help you choose the engine, the build and how to install it.
B-series: air-cooled, up to 8 kW
The smallest Hatz. Single-cylinder, light and compact, and tested in hundreds of thousands of machines, from vibrating plates to Antarctica. Several displacements share the same base engine, so one installation can cover a whole machine family. An optional silent package cuts noise by up to 4 dB(A). The E models are also EPA Tier 4 final certified and work with Hatz fiPMG generators.
| Model | Power | Torque | Speed | Emissions |
|---|---|---|---|---|
| 1B20 | 1.5–3.4 kW | 10.3 Nm | 3600 rpm | EU Stage V |
| 1B30 | 2.3–5.0 kW | 16.2 Nm | 3600 rpm | EU Stage V |
| 1B30E | 2.1–4.5 kW | 14.7 Nm | 3600 rpm | EU Stage V, EPA Tier 4 final |
| 1B40 | 3.5–7.3 kW | 23.4 Nm | 3600 rpm | EU Stage V |
| 1B50 | 3.9–7.9 kW | 25.6 Nm | 3600 rpm | EU Stage V |
| 1B50E | 3.9–7.9 kW | 25.6 Nm | 3600 rpm | EU Stage V, EPA Tier 4 final |

1B30E: air-cooled single-cylinder from the B-series
D-series: the strongest single-cylinder there is
With 11.2 kW, the Hatz 1D90 is the most powerful single-cylinder diesel engine in the world. A fully balanced crankshaft and flywheel, plus optional counter-rotating balance shafts, make the D-series the smoothest engine in its class. The 1D81C comes in a sound-reducing capsule, and the 1D90E is also EPA Tier 4 final certified.
| Model | Power | Torque | Speed | Emissions |
|---|---|---|---|---|
| 1D42 | 3.3–7.0 kW | 22.5 Nm | 3600 rpm | EU Stage V |
| 1D50 | 3.7–7.5 kW | 24.8 Nm | 3600 rpm | EU Stage V |
| 1D81 | 5.5–10.1 kW | 36.3 Nm | 3600 rpm | EU Stage V |
| 1D81C | 5.4–9.6 kW | 34.4 Nm | 3600 rpm | EU Stage V |
| 1D90E | 5.7–10.5 kW | 39.3 Nm | 3600 rpm | EU Stage V, EPA Tier 4 final |
| 1D90 | 6.4–11.2 kW | 40.7 Nm | 3600 rpm | EU Stage V |
| 1D90V | 6.4–11.2 kW | 40.7 Nm | 3600 rpm | EU Stage V |

1D90E: the electronically controlled version of the world’s most powerful single-cylinder diesel
F-series: water-cooled, no aftertreatment
Compact water-cooled engines in four displacements: 0.95, 1.1, 1.3 and 1.75 litres. Eleven models cover 7.5 to 18.4 kW and 48 to 76 Nm, and all meet EU Stage V and EPA Tier 4 final without any exhaust aftertreatment. Low weight, low fuel consumption, low noise, reliable cold starts and long service intervals. European versions have a mechanical governor as standard, with an electronic governor as an option. The F-series is also available as an Open Power Unit.
H-series: more power, less weight
Three and four cylinders, turbocharged, common rail. The H-series is up to 90 kg lighter than its closest competitor, and its weight and fuel consumption are the lowest in its class. Two valves per cylinder and premium parts in every critical place keep it simple and durable. The 3H50T meets Stage V with no EGR, DOC or DPF at all.
| Model | Cylinders | Power | Torque | Emissions | Aftertreatment |
|---|---|---|---|---|---|
| 3H50T | 3 | up to 18.4 kW | 130 Nm | EU Stage V, EPA Tier 4 final | None |
| 3H50TICD | 3 | 22.6–43.7 kW | 203 Nm | EU Stage V, EPA Tier 4 final | DPF |
| 4H50TICD | 4 | 31.0–55.4 kW | 244 Nm | EU Stage V, EPA Tier 4 final | DPF |
Building for export? Hatz also makes the 3H50TI (up to 48.2 kW) and 4H50TI (up to 63.7 kW) for less regulated markets, and the 3H50TIC and 4H50TIC for EPA Tier 4 final.

4H50TICD: four-cylinder H-series engine, EU Stage V with DPF
Open Power Units
If you would rather not engineer the cooling, fuel system, electrics and air intake yourself, take the Open Power Unit. Hatz assembles the complete unit in Germany and designs every part of it for heat, heavy dust and pressure washing. Available for the F- and H-series, with an optional warranty of up to five years on the whole system.

H-series Open Power Units, ready to install
Generators and battery chargers
fiPMG generators put a permanent magnet generator inside the flywheel of the 1B30E or 1B50E. It adds just 3 kg and 35 mm to the engine and runs at around 85% efficiency. Used for hybrid drives, battery charging on cranes and elevating platforms, and backup power.
AC generators, Silent Pack are soundproofed, compact generators with diesel or petrol drive that handle loads with high inrush currents well. An RV version is made for motorhomes and vehicles.

1B30 with fiPMG: the generator sits inside the flywheel
Service and genuine parts
Our technicians service Hatz engines in Estonia, Latvia and Lithuania, in our workshops and on site. We supply genuine Hatz parts and maintenance kits for each service interval. In an engine that vibrates in dust all day, a cheap copy is a false economy.
With Hatz Protect+, the warranty can be extended to 60 months or 3,000 hours on air-cooled engines, and 60 months or 5,000 hours on the H-series. Each authorised service adds another 12 months.
Hatz diagnostic tools, the HSP display and telematics hardware let us read engine data over CAN J1939, find faults in the field and keep track of machines remotely.
Talk to us
Call or write to our teams in Tallinn, Riga or Klaipėda. Contacts are on our contact page. Full datasheets for every series are on hatz.com.
We also represent Volvo Penta, DEUTZ, Mercedes-Benz off-highway and AGCO Power industrial engines.
