Mitsubishi
Mitsubishi S12A2-Y2PTAW-2
S12A2 Series
Mitsubishi S12A2-Y2PTAW-2 33.93L 12-cylinder diesel engine for generator sets. 800 kWe standby / 727 kWe prime at 60Hz/1800RPM. EPA Tier 2 stationary standby. Turbocharged Aftercooled.
Overhaul & repair parts- Manufacturer files
- 2 datasheets
- Last updated
- 2026-06-11
- Package route
- diesel generator sets
- Standby Power · 60 Hz
- 1,000 kVA
- Electrical Output
- 800 kWe
- Cylinders
- V12
- Displacement
- 33.93 L
- Rated Speed
- 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf · kWe estimated — see note below
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 807.8 | 727 | 908.8 |
| Standby Power | 888.9 | 800 | 1000 |
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.
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Mitsubishi S12A2-Y2PTAW-2 overhaul & repair parts
Already running a Mitsubishi S12A2-Y2PTAW-2? Start with the parts you need, then send your nameplate so we can help check the right references for your engine.
Reviewed part-number references
A starting point for identification. Fitment must be confirmed before ordering.
- Turbocharger49181-05220
Turbocharger assembly
Fitment check: Match the exact MTEA Engine Type label S12A2-Y2PTAW-2; use the complete engine serial number and current MEeS illustration to select among all listed turbocharger numbers before ordering
Source: Mitsubishi Turbocharger and Engine America official catalog - 49181-05220-Turbocharger
Selected references only; this is not a complete overhaul list or a stock listing.
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Mitsubishi S12A2-Y2PTAW-2 generator set context
The Mitsubishi S12A2-Y2PTAW-2 is listed here as a diesel generator-drive engine for 60 Hz generator sets, with a headline 1,000 kVA / 800 kWe / standby 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.
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Technical Specifications
| Brand | Mitsubishi |
| Model | S12A2-Y2PTAW-2 |
| Series | S12A2 Series |
| Configuration | V12 |
| Cylinders | 12 |
| Displacement | 33.93 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Tier 2 |
| Country of Origin | Japan |
Frequently asked questions
What is the power output of the Mitsubishi S12A2-Y2PTAW-2?
The Mitsubishi S12A2-Y2PTAW-2 is rated at 1,000 kVA standby / 909 kVA prime at 60 Hz (1,800 rpm).
Does the S12A2-Y2PTAW-2 run at 50 Hz or 60 Hz?
The Mitsubishi S12A2-Y2PTAW-2 is rated for 60 Hz (1,800 rpm).
What fuel does the Mitsubishi S12A2-Y2PTAW-2 use?
The Mitsubishi S12A2-Y2PTAW-2 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the S12A2-Y2PTAW-2?
The Mitsubishi S12A2-Y2PTAW-2 is a V12 (12-cylinder) engine with a displacement of 33.93 L.
What emissions information is listed for the S12A2-Y2PTAW-2?
This record lists U.S. EPA Tier 2 for the Mitsubishi S12A2-Y2PTAW-2. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the Mitsubishi S12A2-Y2PTAW-2?
The Mitsubishi S12A2-Y2PTAW-2 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 S12A2-Y2PTAW-2?
This page links reference documents for the Mitsubishi S12A2-Y2PTAW-2. Check each document's title, model coverage, revision and rating conditions before using it for selection.