Caterpillar
Caterpillar D3304 Propulsion
3300 Series
Caterpillar D3304 Propulsion 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
- L4
- Displacement
- 7 L
- Rated Speed
- 1,500 RPM
Ask about Caterpillar D3304 Propulsion
Choose parts / service or sourcing. Your message includes this model and page link.
Caterpillar D3304 Propulsion overhaul & repair parts
Already running a Caterpillar D3304 Propulsion? Start with the parts you need, then send your nameplate so we can help check the right references for your engine.
Start with engine identification
We do not have a reviewed public parts preview for this model yet. Send the engine details and tell us what needs repair.
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 D3304 Propulsion and your selected categories included. Attach your photos there.
Caterpillar D3304 Propulsion generator set context
The Caterpillar D3304 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 | D3304 Propulsion |
| Series | 3300 Series |
| Configuration | L4, marine propulsion diesel |
| Cylinders | 4 |
| Displacement | 7 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 D3304 Propulsion use?
The Caterpillar D3304 Propulsion is a diesel generator-set engine.
What is the displacement and cylinder configuration of the D3304 Propulsion?
The Caterpillar D3304 Propulsion is an inline-4 (4-cylinder) engine with a displacement of 7 L.
Is the D3304 Propulsion still in production?
No — the Caterpillar D3304 Propulsion is discontinued. Its specifications and datasheets remain archived here for reference.
Are reference documents available for the D3304 Propulsion?
This page links reference documents for the Caterpillar D3304 Propulsion. Check each document's title, model coverage, revision and rating conditions before using it for selection.