Waukesha INDUSTRIAL ENGINES
DiscontinuedWaukesha 6-90
Early Historical Waukesha Model Series
Waukesha 6-90 discontinued early historical engine model series. The Waukesha Engine Historical Society production table lists this model series from 1932 to 1936; 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.
Cylinders / Config
Inline-6 F-head gasoline engine model series
Mechanical & Electrical Specifications
| Brand | Waukesha |
| Model | 6-90 |
| Series | Early Historical Waukesha Model Series |
| Configuration | Inline-6 F-head gasoline engine model series |
| Cylinders | 6 |
| Fuel Type | Gasoline |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Historical production ended 1936 |
| Certifications | Waukesha Engine Historical Society production table, Waukesha Engine Historical Society model-designation guide |
| Country of Origin | United States |
| Year Introduced | 1932 |
| Year Discontinued | 1936 |
Frequently Asked Questions
What fuel does the Waukesha 6-90 use?
The Waukesha 6-90 is a Gasoline generator-set engine.
What is the cylinder configuration of the 6-90?
The Waukesha 6-90 is an inline-6 (6-cylinder) engine.
What emissions standard does the 6-90 meet?
The Waukesha 6-90 is certified to Historical production ended 1936 emissions standards.
Is the 6-90 still in production?
No — the Waukesha 6-90 is discontinued (production ended around 1936). Its specifications and datasheets remain archived here for reference.
Is a datasheet available for the 6-90?
Yes — an official Waukesha datasheet for the Waukesha 6-90 can be downloaded from this page.