Caterpillar
Caterpillar 3126 Marine Propulsion
3100 Series
Caterpillar 3126 Marine Propulsion discontinued legacy engine. Source-validated Caterpillar legacy industrial or marine engine model with ongoing parts and rebuild demand.
Chat on WhatsApp about this engine
Opens WhatsApp with Caterpillar 3126 Marine Propulsion and this page link filled in.
- Manufacturer files
- No datasheet
- Last updated
- 2026-08-04
- Package route
- diesel generator sets
- Cylinders
- L6
- Displacement
- 7.2 L
- Rated Speed
- 1,500 RPM
Caterpillar 3126 Marine Propulsion generator set context
The Caterpillar 3126 Marine Propulsion 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.
Also searched as
Technical Specifications
| Brand | Caterpillar |
| Model | 3126 Marine Propulsion |
| Series | 3100 Series |
| Configuration | L6, marine propulsion diesel |
| Cylinders | 6 |
| Displacement | 7.2 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | United States |
Frequently asked questions
What fuel does the Caterpillar 3126 Marine Propulsion use?
The Caterpillar 3126 Marine Propulsion is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 3126 Marine Propulsion?
The Caterpillar 3126 Marine Propulsion is an inline-6 (6-cylinder) engine with a displacement of 7.2 L.
Is the 3126 Marine Propulsion still in production?
No — the Caterpillar 3126 Marine Propulsion is discontinued. Its specifications and datasheets remain archived here for reference.