Mitsubishi
Mitsubishi S12R-PTA-D
S12R Series
Mitsubishi S12R-PTA-D 49.030L V12 constant-speed diesel engine for generator applications. Official MHI output without fan - 50 Hz: prime 1110 kWm at 1500 rpm; 60 Hz: prime 1010 kWm at 1800 rpm. Emissions: Unregulated.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-07-23
- Package route
- diesel generator sets
- Prime Power · 50 Hz
- 1,318 kVA
- Electrical Output
- 1,054 kWe
- Cylinders
- V12
- Displacement
- 49.03 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf · kWe estimated — see note below
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 1110 | 1054.4 | 1318 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 1010 | 959.2 | 1199 |
Note: The manufacturer does not publish a separate kWe rating for this engine. kWe values shown are estimated from the rated mechanical output (kWm) using a conservative 90% alternator efficiency factor.
Ask about Mitsubishi S12R-PTA-D
Choose parts / service or sourcing. Your message includes this model and page link.
Mitsubishi S12R-PTA-D overhaul & repair parts
Already running a Mitsubishi S12R-PTA-D? 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 S12R-PTA-D and your selected categories included. Attach your photos there.
Mitsubishi S12R-PTA-D generator set context
The Mitsubishi S12R-PTA-D is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 1,318 kVA / 1,054 kWe / prime rating. 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 | Mitsubishi |
| Model | S12R-PTA-D |
| Series | S12R Series |
| Configuration | V12 |
| Cylinders | 12 |
| Displacement | 49.03 L |
| Dry Weight | 5350 kg |
| Dimensions (L×W×H) | 2325 × 1360 × 1592 mm |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | Japan |
Frequently asked questions
What is the power output of the Mitsubishi S12R-PTA-D?
The Mitsubishi S12R-PTA-D is rated at 1,318 kVA prime at 50 Hz (1,500 rpm); and 1,199 kVA prime at 60 Hz (1,800 rpm).
Does the S12R-PTA-D run at 50 Hz or 60 Hz?
The Mitsubishi S12R-PTA-D is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Mitsubishi S12R-PTA-D use?
The Mitsubishi S12R-PTA-D is a diesel generator-set engine.
What is the displacement and cylinder configuration of the S12R-PTA-D?
The Mitsubishi S12R-PTA-D is a V12 (12-cylinder) engine with a displacement of 49.03 L.
What is the catalog status of the Mitsubishi S12R-PTA-D?
The Mitsubishi S12R-PTA-D is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.
Are reference documents available for the S12R-PTA-D?
This page links reference documents for the Mitsubishi S12R-PTA-D. Check each document's title, model coverage, revision and rating conditions before using it for selection.