Kubota
Kubota ZB400
ZB Series
Kubota ZB400 discontinued horizontal two-cylinder diesel. Kubota Engine Parts Direct lists ZB400 under Discontinued Engine Series; Kubota Engine Discovery identifies the ZB400 as a 1980 diesel with 400 cc displacement, two cylinders, and horizontal water-cooled four-stroke construction.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-11
- Package route
- diesel generator sets
- Cylinders
- L2
- Displacement
- 0.4 L
- Rated Speed
- 1,500 RPM
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Kubota ZB400 overhaul & repair parts
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Kubota ZB400 generator set context
The Kubota ZB400 is listed here as a diesel generator-drive engine for 50 Hz generator sets. 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.
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Technical Specifications
| Brand | Kubota |
| Model | ZB400 |
| Series | ZB Series |
| Configuration | Horizontal inline-2, water-cooled four-stroke diesel |
| Cylinders | 2 |
| Displacement | 0.4 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Legacy pre-current industrial emissions |
| Country of Origin | Japan |
Frequently asked questions
What fuel does the Kubota ZB400 use?
The Kubota ZB400 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the ZB400?
The Kubota ZB400 is an inline-2 (2-cylinder) engine with a displacement of 0.4 L.
What emissions information is listed for the ZB400?
This record lists Legacy pre-current industrial emissions for the Kubota ZB400. 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.
Is the ZB400 still in production?
No — the Kubota ZB400 is discontinued. Its specifications and datasheets remain archived here for reference.
Are reference documents available for the ZB400?
This page links reference documents for the Kubota ZB400. Check each document's title, model coverage, revision and rating conditions before using it for selection.