The Mitsubishi S12R-PTAR1 is a 49.03 L 12-cylinder turbocharged with after cooler engine rated at 1500 rpm, producing up to 1303 kW. It powers generator sets from Mitsubishi, including the MGS1300R and MGS1500R. It holds 180 L (47.6 gal) of oil and 125 L (33.0 gal) of coolant.
Also known as: Mitsubishi S12R-PTAR1
Part of the Mitsubishi S12R engine family — 14 variants share parts & fitment.
| Oil capacity | 180.0 L |
|---|---|
| Coolant capacity | 125.0 L |
| Displacement | 49.03 L |
| Cylinders | 12 |
| Aspiration | turbocharged with after cooler |
| Rated speed | 1500 rpm |
| Gross power | 1303 kW |
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Turbo filter, Paper Element | — | |||
| Fuel filter | — | ||||
| Oil filter | Paper element | — | |||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | 125.0 | — | |||
| Oil | Lubricating Oil Capacity: 180 L | 180.0 L | — | ||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Part # | Description | Category |
|---|---|---|
| 30091-08800 | valve lapper | Air filter |
| FTG15L | Air Cleaner | Air filter |
| 8-16 | Cleaning, inspecting, and replacing the air cleaner element | Changing air cleaner element |
| 8-17 | Cleaning, inspecting, and replacing the air cleaner element | Changing air cleaner element |
| 8-10 | Changing the coolant | Changing coolant |
| 8-14 | Cleaning, inspecting and replacing pre-cleaner | Cleaning pre cleaner |
| 8-18 | Coolant drain cock - water pump | Coolant filter |
| 45483-61200 | Fuel filter | Fuel filter |
| GU-GST-1365 | VALVE GUIDE AND FUEL PUMP PULLER | Fuel pump |
| 37594-01300 | ThreeBond 1211 liquid gasket | Gasket |
| GU-53-YA-40 | GUIDE, VALVE TAPPET | Guide |
| 33591-10101 | nozzle remover | Injector |
| 45403-51100 | Oil cooler | Oil cooler |
| 36291-00098 | Oil sample bottle set | Oil filter |
| 36291-19100 | Engine oil sampling pump | Oil filter |
| 45193-50700 | Oil level gage | Oil level gage |
| 06.2019 | Radiator | Service part / kit |
| 32522-04111 | Thermo label for temperature management (75 to 95°C) | Service part / kit |
| 32522-04211 | Thermo label for temperature management (100 to 120°C) | Service part / kit |
| 32522-04311 | Thermo label for temperature management (50 to 70°C) | Service part / kit |
| 32591-04200 | valve seat puller | Service part / kit |
| 33591-04300 | valve guide remover | Service part / kit |
| 37191-03200 | piston ring tool | Service part / kit |
| 37507-12500 | Shim 0.10 ± 0.02 mm [0.0039 ± 0.0007 in.] for cylinder liner flange protrusion adjustment | Service part / kit |
| 37507-12510 | Shim 0.05 ± 0.02 mm [0.0020 ± 0.0007 in.] for cylinder liner flange protrusion adjustment | Service part / kit |
| 37507-12520 | Shim 0.15 ± 0.02 mm [0.0059 ± 0.0007 in.] for cylinder liner flange protrusion adjustment | Service part / kit |
| 37591-02400 | eye nut | Service part / kit |
| 37591-02600 | rocker bushing tool | Service part / kit |
| 37591-06200 | liner pusher | Service part / kit |
| 37591-06300 | bolts | Service part / kit |
| 37591-06400 | valve seat cutter | Service part / kit |
| 37591-06430 | valve seat cutter | Service part / kit |
| 37598-09100 | head bolt spacers | Service part / kit |
| 37598-09201 | projection plate O | Service part / kit |
| 43291-00301 | Plunger holder (special tool) | Service part / kit |
| 45191-08400 | Pliers | Service part / kit |
| 45483-51300 | Warning label | Service part / kit |
| 45493-50700 | Do not open inspection cover. | Service part / kit |
| 45493-51100 | Warning label | Service part / kit |
| 45493-51200 | INSPECTION COVER WITHIN 10 MINUTES AFTER ENGINE STOP. | Service part / kit |
| 45493-51300 | HIGH PLACE MAY CAUSE FALLING. | Service part / kit |
| 45493-51400 | Rotating parts can cause severe personal injury. | Service part / kit |
| 45493-51500 | BE CAREFUL OF ROTATING FAN. | Service part / kit |
| 48202-09301 | Sleeve installer | Service part / kit |
| 48202-14100 | Shim (thickness: 0.5 mm [0.0197 in.]) | Service part / kit |
| 48202-14200 | Shim (thickness: 0.6 mm [0.0236 in.]) | Service part / kit |
| 48291-00200 | Plunger spring compression jig | Service part / kit |
| 48291-00301 | Plunger holder | Service part / kit |
| 48291-00400 | Cam thrust ejector | Service part / kit |
| 49160-90101 | snap ring pliers | Service part / kit |
| 49160-90110 | snap ring pliers | Service part / kit |
| 99240-32120 | Pub.No. 99240-32120 | Service part / kit |
| GU-14-Y | VALV - GU-14-Y | Service part / kit |
| GU-14-Y-117 | BODY - GU-14-Y-117 | Service part / kit |
| GU-14-Y-117B | NUT, LOCK - GU-14-Y-117B | Service part / kit |
| GU-14-Y-117C | DE - Y-117C | Service part / kit |
| GU-14-Y-117D | REGULATOR, FUEL PRESSURE - GU-52-YA-117A | Service part / kit |
| GU-14-Y-117E | SCREW, ADJUSTING - GU-14-Y-117E | Service part / kit |
| GU-14-Y-117G | SPRING - GU-14-Y-117G | Service part / kit |
| MM321420 | 7: | pout. eve W11 1 1 1 a | Service part / kit |
| GU-52-Y-94 | PLATE, DECOMPRESSION | Plate |
| 48291-00100 | Pump assembly stand | Pump |
| 37191-01500 | valve guide seal installer | Seal |
| 48202-14300 | tappet | Tappet |
| 48202-14400 | tappet | Tappet |
| GU-52-Y-121 | TAPPET, VALVE | Tappet |
| 32522-04100 | Thermo Label 75°C to 95°C (167°F to 203°F) | Thermostat |
| 32522-04200 | Thermo Label 100°C to 120°C (212°F to 248°F) | Thermostat |
| 32522-04300 | Thermo label (50 to 70 °C) | Thermostat |
| 45493-51800 | Turning gear position (turning shaft) | Turning gear position |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
The Mitsubishi S12R-PTAR1 engine has an oil capacity of 180.0 liters.
The Mitsubishi S12R-PTAR1 has a displacement of 49.03 liters with 12 cylinders.
The Mitsubishi S12R-PTAR1 powers 2 generator set(s), including Mitsubishi MGS1300R, Mitsubishi MGS1500R.