The Mitsubishi S12A2 PTA is a 33.93 L 60-cylinder tci engine rated at 1500 rpm, producing up to 850 kW. It powers generator sets from Generac and Talles, including the 573RSL4035, SD800 and HTW-780 T5. It holds 120 L (31.7 gal) of oil and 1100 L (290.6 gal) of coolant.
Also known as: MITSUBISHI S12A2 PTA, S12A2 - PTA S12A2 - PTA
Part of the Mitsubishi S12A2 engine family — 12 variants share parts & fitment.
| Oil capacity | 120.0 L |
|---|---|
| Coolant capacity | 1100.0 L |
| Displacement | 33.93 L |
| Cylinders | 60 |
| Aspiration | TCI |
| Rated speed | 1500 rpm |
| Gross power | 850 kW |
Shared across brands: Generac, Talles
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | Full Flow Cartridge | — | |||
| Oil filter | Full Flow Cartridge | — | |||
| Battery | 2 x 12V | — | |||
| Belt | — | ||||
| Coolant | — | ||||
| Oil | Gear | 120.0 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 |
|---|---|---|
| 300204 | adjusting screw (5) | Adjusting screw |
| 3-10 | Coolant drain cock - water pump | Air filter |
| 3-21 | Air Cleaner Element Replacement | Air filter |
| 300082 | Speed control lever | Air filter |
| 300085 | Speed control lever | Air filter |
| 300086 | Air cleaner (air-motor starting) | Air filter |
| 300089 | Air cleaner indicator (paper-element type) | Air filter |
| 300096 | Air filter (air-motor starting) | Air filter |
| 300100 | Air filter (direct-air starting) | Air filter |
| 300103 | Air cleaner (oil-bath type) | Air filter |
| 300104 | Air cleaner case | Air filter |
| 300111 | Air filter (silencer type) | Air filter |
| 300115 | Air cleaner element (paper-element type) | Air filter |
| 300116 | Air filter element (direct-air starting) | Air filter |
| 300092 | Air tank (air-motor/direct-air starting) | Air tank |
| 300097 | Air tank (air-motor/direct-air starting) | Air tank |
| 3-14 | Air vent cock - inter cooler cooling system | Air vent cock inter cooler cooling system |
| 3-11 | Air vent plug - main cooling system | Air vent plug main cooling system |
| 300030 | Battery | Battery |
| 300090 | Battery | Battery |
| 300112 | Fan/water pump/alternator drive belt | Belt |
| 32591-09100 | V-belt gauge | Belt |
| 8-25 | Air vent cock - inter cooler cooling system | Belt |
| 8-26 | DRIVE BELT | Belt |
| 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 |
| 3-24 | Checking air Cleaner | Checking air cleaner |
| 3-16 | Checking battery electrolyte level | Checking battery electrolyte level |
| 3-23 | Checking fuel control tink | Checking fuel control tink |
| 3-17 | Checking specific gravity of electrolyte | Checking specific gravity of electrolyte |
| 3-18 | Cleaning fuel filter (wire-element type) | Cleaning fuel filter wire element type |
| 8-14 | Cleaning, inspecting and replacing pre-cleaner | Cleaning pre cleaner |
| 300101 | Anti-freeze solution | Coolant |
| 3-15 | OIL PUMP AND SUCTION PIPE | Coolant filter |
| 8-18 | Coolant drain cock - water pump | Coolant filter |
| 8-19 | Coolant drain cock - air cooler water pump | Coolant filter |
| 8-20 | Coolant drain cock - engine body | Coolant filter |
| 8-21 | Coolant drain cock - water pump | Coolant filter |
| 8-22 | Air vent plug - main cooling system | Coolant filter |
| 8-23 | Radiator coolant level | Coolant filter |
| 8-24 | Coolant drain cock - inter cooler water pump | Coolant filter |
| 300107 | Exhaust muffler | Exhaust muffler |
| 3-12 | CAMSHAFT LUBRICATION NOZZLE | Fuel filter |
| 300098 | Primary fuel filter (wire-element type) | Fuel filter |
| 300099 | Secondary fuel filters (paper-element type) | Fuel filter |
| 300122 | new cartridge, old cartridge | Fuel filter |
| 300519 | apply oil to gasket of a new cartridge. bring gasket into contact with sealing face of bracket, and tighten remove case, and wash dust particles off element | Fuel filter |
| 300939 | primary fuel filter (wire-element type) — wash element | Fuel filter |
| 300087 | Fuel tank | Fuel tank |
| 300094 | Fuel tank | Fuel tank |
| GM36275 | Gasket, cylinder head | Gasket |
| GM57300 | Gasket, cylinder head | Gasket |
| 300046 | API Service Classification CD oil | Grease |
| 36291-00900 | Fuel Injection Nozzle Tip | Injector |
| 300110 | Check bushings for cracks or other defects. | Maintenance |
| 300113 | Change zinc rods of heat exchanger, air coolers, etc. | Maintenance |
| 300109 | New oil in clean jug, Old oil out of drain plug | Oil change |
| 3-19 | Oil filler and oil level gauge | Oil filler and oil level gauge |
| 3-22 | OIL FILTER | Oil filter |
| 300106 | Bypass oil filter | Oil filter |
| 300114 | Governor oil filter (Woodward type) | Oil filter |
| 36291-00098 | Oil sample bottle set | Oil filter |
| 36291-19100 | Engine oil sampling pump | Oil filter |
| 8-15 | Oil filler and oil level gauge | Oil filter |
| 300084 | Check to be sure linkage moves smoothly without any | Oil pan |
| 300108 | Oil pan | Oil pan |
| 300088 | Oiler (air-motor starting) | Oiler |
| 07-01 | CRANKCASE ASS~ | Service part / kit |
| 3-13 | Coolant drain cock - inter cooler water PUMP | Service part / kit |
| 300004 | Daily Operation Record | Service part / kit |
| 300517 | Full KVA Adapter Cord | Service part / kit |
| 300910 | Safety Information Sheet | Service part / kit |
| 300949 | Camshaft Rocker shaft | Service part / kit |
| 300950 | Water jacket | Service part / kit |
| 300952 | Intercooler (left side) | 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 |
| 45499-51400 | Warning label | Service part / kit |
| 45499-60700 | Warning label | Service part / kit |
| 45A83-51500 | Warning label | Service part / kit |
| 500001 | thru QA6901. | Service part / kit |
| GM14491 | Cap, sealing | Service part / kit |
| GM14569 | Guide, valve | Service part / kit |
| GM15167 | Nut | Service part / kit |
| GM15180 | Washer, spring | Service part / kit |
| GM15518 | Cap, sealing | Service part / kit |
| GM36261 | Head assembly, cylinder | Service part / kit |
| GM36262 | Seat, inlet, standard | Service part / kit |
| GM36263 | Seat, inlet, 0.3 oversized | Service part / kit |
| GM36264 | Seat, inlet, 0.6 oversized | Service part / kit |
| GM36265 | Seat, exhaust, standard | Service part / kit |
| GM36266 | Seat, exhaust, 0.3 oversized | Service part / kit |
| GM36267 | Seat, exhaust, 0.6 oversized | Service part / kit |
| GM36270 | Stud | Service part / kit |
| GM36271 | Connector | Service part / kit |
| GM36272 | Bolt, cylinder head | Service part / kit |
| GM36273 | Bolt, cylinder head | Service part / kit |
| GM36274 | Washer | Service part / kit |
| GM57296 | Head assembly, cylinder | Service part / kit |
| GM57297 | Seat, inlet, standard | Service part / kit |
| GM57298 | Seat, inlet, 0.3 oversized | Service part / kit |
| GM57299 | Seat, inlet, 0.6 oversized | Service part / kit |
| NP-10-2 | rust-preventive oil | Service part / kit |
| SCR25 | Mitsubishi SCR system | Service part / kit |
| 3-20 | Radiator Cap | Radiator cap |
| 300102 | Rust inhibitor | Rust inhibitor |
| GM14529 | Washer, sealing | Seal |
| 300105 | Silencer (precleaner) | Silencer |
| 300947 | max. speed setting | Speed setting |
| 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 |
| 300948 | Turbocharger | Turbocharger |
| 300091 | Valves in pipeline | Valve |
| 41-1 | Warning labels | Warning label |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
The Mitsubishi S12A2 PTA engine has an oil capacity of 120.0 liters.
The Mitsubishi S12A2 PTA has a displacement of 33.93 liters with 60 cylinders.
The Mitsubishi S12A2 PTA powers 3 generator set(s), including Generac 573RSL4035, Generac SD800, Talles HTW-780 T5.