Hatz
Hatz 4M42
M Series
Hatz 4M42 is a 3.432 L inline-4 naturally aspirated air-cooled diesel engine. EPA annual certification data lists 39 kWm at 1800 RPM under Interim Tier 4.
Overhaul & repair parts- Manufacturer files
- No datasheet
- Last updated
- 2026-07-25
- Package route
- diesel generator sets
- Mechanical Output
- 39 kW
- Cylinders
- L4
- Displacement
- 3.432 L
- Rated Speed
- 1,500 RPM
Ask about Hatz 4M42
Choose parts / service or sourcing. Your message includes this model and page link.
Hatz 4M42 overhaul & repair parts
Already running a Hatz 4M42? Start with the parts you need, then send your nameplate so we can help check the right references for your engine.
Start with engine identification
We do not have a reviewed public parts preview for this model yet. Send the engine details and tell us what needs repair.
Let’s identify the right parts.
The model is the starting point. Serial numbers and build configurations can change which parts fit.
- Take a clear photo of the engine nameplate.
- Tell us what needs repair or replacement.
- Send both in WhatsApp to start a fitment check.
Opens WhatsApp with 4M42 and your selected categories included. Attach your photos there.
Hatz 4M42 generator set context
The Hatz 4M42 is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 39 kW / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
Also searched as
Technical Specifications
| Brand | Hatz |
| Model | 4M42 |
| Series | M Series |
| Configuration | L4 Naturally Aspirated |
| Cylinders | 4 |
| Displacement | 3.432 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Air-Cooled |
| Emissions Standard | U.S. EPA Interim Tier 4 |
| Certifications | U.S. EPA Interim Tier 4 |
| Country of Origin | Germany |
Frequently asked questions
What fuel does the Hatz 4M42 use?
The Hatz 4M42 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 4M42?
The Hatz 4M42 is an inline-4 (4-cylinder) engine with a displacement of 3.432 L.
What emissions information is listed for the 4M42?
This record lists U.S. EPA Interim Tier 4 for the Hatz 4M42. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the Hatz 4M42?
The Hatz 4M42 is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.