Mitsubishi S12A2-PTAW
Built: 2012-2015 · Series: Other models
More machines from model year 2012
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Mitsubishi – further nonroad diesel engines: the collective page for the L and S series outside the named models, two- to sixteen-cylinder units from 11 to 2,150 kW, model years 2012 to 2026
Mitsubishi builds industrial diesel engines in Japan in the L and S series for construction machinery, generator sets and marine applications. This page gathers 32 variants that the register could not assign to any named main series, from the small L2E and L3E engines through the S3 and S4 series to the large V12 and V16 S12R-PTAW and S16R-PTAW engines.
Read on 3 more paragraphs
The register lists 32 variants here rated from 11 to 2,150 kW at 1,750 to 3,600 rpm, two- to sixteen-cylinder engines (27 inline, 5 V-configuration) with a bore of 76 to 170 mm and a stroke of 70 to 180 mm. Maximum torque ranges from 30 to 9,284 Nm at 1,350 to 2,700 rpm, model years from 2012 to 2024 (final model year up to 2026). The 8–19 kW, 19–37 kW and 37–56 kW power categories are equally represented with 8 variants each, followed by 560–2,237 kW with 6; among emission tiers, Tier 4 (Final or Phase-in) leads narrowly with 13 variants ahead of Interim Tier 4 with 12.
The engine range thus spans small construction machinery units in the low double-digit kW range as well as standby generator sets in the megawatt range; the near-even split across the three lower power categories points to a broadly diversified line-up without one dominant focus.
When buying used, small naturally aspirated engines call for a check of cold-start behaviour and glow plugs, while the large turbocharged V-configuration engines additionally need boost pressure and turbocharger condition checked; oil consumption also matters, and, for engines with model years from 2012 onward, the running hours accumulated so far. Spare parts run through the Mitsubishi dealer network.
Sources: SpecCodex register, model data: Mitsubishi (weitere Nonroad-Dieselmotoren), Mitsubishi Heavy Industries (Mutterkonzern)
Technical data
Engine
| Engine code | S12A2-Y2PTAW-2correct |
|---|---|
| Engine family | DMVXL33.9BBA; EMVXL33.9BBA; CMVXL33.9BBAcorrect |
| Engine families | DMVXL33.9BBA; EMVXL33.9BBA; CMVXL33.9BBAcorrect |
| Fuel | 300-500 ppm Low Sulfur Dieselcorrect |
| Rated output | 900 kWcorrect |
| Power band | 560<kW<=2237correct |
| Rated speed | 1,800 rpmcorrect |
| Maximum torque | 4,775 N·mcorrect |
| Speed at max. torque | 1,800 rpmcorrect |
| Cylinders | 12correct |
| Cylinder layout | V layoutcorrect |
| Bore | 150 mmcorrect |
| Stroke | 160 mmcorrect |
| Operating cycle | four-stroke dieselcorrect |
| Injection | direct injectioncorrect |
| Aspiration | turbochargedcorrect |
| Turbocharger type | Fixed Turbochargercorrect |
| Charge-air cooling | liquidcorrect |
| Emissions stage | Tier 2correct |
Origin and approval
| Version | S12A2-Y2PTAW-2correct |
|---|---|
| Built from | 2012correct |
| Built to | 2014correct |
| Model year from | 2012correct |
| Model year to | 2026correct |
Frequently asked questions
How much power does the Mitsubishi S12A2-PTAW have?
The Mitsubishi S12A2-PTAW delivers 900 kW.
When was the Mitsubishi S12A2-PTAW built?
Production years: 2012-2015.
What to check before buying
- Match the data plate against the order: frame size, mounting and rating have to agree.
- For used units, ask about winding condition and bearing play.
- Ask about parts availability for this series — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 26 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: US EPA — engine certification data (retrieved August 2026) · How we check the data
Diesel engine in 3D section
Turn the model, look inside and click an assembly — each one is explained.
