Caterpillar
Caterpillar 3412C
3400 Series
Caterpillar 3412C discontinued legacy engine. Source-validated Caterpillar legacy industrial or marine engine model with ongoing parts and rebuild demand.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-04
- Package route
- diesel generator sets
- Cylinders
- V12
- Displacement
- 27 L
- Rated Speed
- 1,500 RPM
Ask about Caterpillar 3412C
Choose parts / service or sourcing. Your message includes this model and page link.
Caterpillar 3412C overhaul & repair parts
Already running a Caterpillar 3412C? Start with the parts you need, then send your nameplate so we can help check the right references for your engine.
These categories have model-related records. Part numbers need further checking before we display them here.
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 3412C and your selected categories included. Attach your photos there.
Caterpillar 3412C generator set context
The Caterpillar 3412C 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 | 3412C |
| Series | 3400 Series |
| Configuration | V12, diesel |
| Cylinders | 12 |
| Displacement | 27 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 3412C use?
The Caterpillar 3412C is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 3412C?
The Caterpillar 3412C is a V12 (12-cylinder) engine with a displacement of 27 L.
Is the 3412C still in production?
No — the Caterpillar 3412C is discontinued. Its specifications and datasheets remain archived here for reference.
Are reference documents available for the 3412C?
This page links reference documents for the Caterpillar 3412C. Check each document's title, model coverage, revision and rating conditions before using it for selection.