Waukesha
Waukesha 4-55
Early Historical Waukesha Model Series
Waukesha 4-55 discontinued early historical engine model series. The Waukesha Engine Historical Society production table lists this model series from 1932 to 1937; its model-designation guide explains the early letter, six-cylinder, and F-head naming schemes used by these rows. This supports a source-validated legacy page for owners searching parts, service, restoration, and overhaul information.
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- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-12
- Package route
- gas generator sets
- Cylinders
- L4
- Rated Speed
- 1,500 RPM
Waukesha 4-55 generator set context
The Waukesha 4-55 is listed here as a gasoline 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 | Waukesha |
| Model | 4-55 |
| Series | Early Historical Waukesha Model Series |
| Configuration | Inline-4 F-head gasoline engine model series |
| Cylinders | 4 |
| Fuel Type | Gasoline |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Historical production ended 1937 |
| Certifications | Waukesha Engine Historical Society production table, Waukesha Engine Historical Society model-designation guide |
| Country of Origin | United States |
| Year Introduced | 1932 |
| Year Discontinued | 1937 |
Frequently asked questions
What fuel does the Waukesha 4-55 use?
The Waukesha 4-55 is a Gasoline generator-set engine.
What is the cylinder configuration of the 4-55?
The Waukesha 4-55 is an inline-4 (4-cylinder) engine.
What emissions standard does the 4-55 meet?
The Waukesha 4-55 is certified to Historical production ended 1937 emissions standards.
Is the 4-55 still in production?
No — the Waukesha 4-55 is discontinued (production ended around 1937). Its specifications and datasheets remain archived here for reference.
Is a datasheet available for the 4-55?
Yes — an official Waukesha datasheet for the Waukesha 4-55 can be downloaded from this page.