HomeEnginesMitsubishi S12A2 PTA2-S

Mitsubishi S12A2 PTA2-S Engine

The Mitsubishi S12A2 PTA2-S is a 33.93 L 12-cylinder tci engine rated at 1500 rpm, producing up to 851 kW. It powers generator sets from Mitsubishi and Talles, including the MGS0900B, MGS0900C and HTW-920 T5. It holds 120 L (31.7 gal) of oil and 100 L (26.4 gal) of coolant.

Also known as: MITSUBISHI S12A2 PTA2-S

Part of the Mitsubishi S12A2 engine family — 11 variants share parts & fitment.

33.93 L
Displacement
12
Cylinders
1500 rpm
Rated speed
851 kW
Gross power

Engine specifications

Oil capacity120.0 L
Coolant capacity100.0 L
Displacement33.93 L
Cylinders12
AspirationTCI
Rated speed1500 rpm
Gross power851 kW

Generator sets powered by this engine

3

Shared across brands: Mitsubishi, Talles

How to read your Mitsubishi engine serial & model number →

Maintenance schedule

ItemSpecCapacityPart #Interval
Air filterAir Cleaner, paper element dry type
Fuel filterFuel filters, full flow paper element
Oil filterLubricating oil filter, full flow paper element
BatteryBattery Charger, Battery Kit
BeltManual shutoff, 24V DC electric starting motor
CoolantRadiator, blower fan, fan drive
OilLubricating oil cooler, Lubricating oil filter, full flow paper element, Lubricating oil pump, gear driven
Spark plug

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Parts cataloged across the Mitsubishi S12A2 family

74
Part #DescriptionCategory
300204adjusting screw (5)adjusting_screw
300517Full KVA Adapter Cord NEMA 14-50P to NEMA 6-50Radjusting_screw
300082Speed control leverair_filter
300085Speed control leverair_filter
300086Air cleaner (air-motor starting)air_filter
300089Air cleaner indicator (paper-element type)air_filter
300096Air filter (air-motor starting)air_filter
300100Air filter (direct-air starting)air_filter
300103Air cleaner (oil-bath type)air_filter
300104Air cleaner caseair_filter
300111Air filter (silencer type)air_filter
300115Air cleaner element (paper-element type)air_filter
300116Air filter element (direct-air starting)air_filter
300092Air tank (air-motor/direct-air starting)air_tank
300097Air tank (air-motor/direct-air starting)air_tank
300030Batterybattery
300090Batterybattery
300112Fan/water pump/alternator drive beltbelt
300101Anti-freeze solutioncoolant
300107Exhaust mufflerexhaust_muffler
300098Primary fuel filter (wire-element type)fuel_filter
300099Secondary fuel filters (paper-element type)fuel_filter
300122new cartridge, old cartridgefuel_filter
300519apply 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 elementfuel_filter
300939primary fuel filter (wire-element type) — wash elementfuel_filter
300087Fuel tankfuel_tank
300094Fuel tankfuel_tank
GM36275Gasket, cylinder headgasket
GM57300Gasket, cylinder headgasket
300046API Service Classification CD oilgrease
300110Check bushings for cracks or other defects.maintenance
300113Change zinc rods of heat exchanger, air coolers, etc.maintenance
300109New oil in clean jug, Old oil out of drain plugoil_change
300106Bypass oil filteroil_filter
300114Governor oil filter (Woodward type)oil_filter
300084Check to be sure linkage moves smoothly without anyoil_pan
300108Oil panoil_pan
300088Oiler (air-motor starting)oiler
07-01CRANKCASE ASS~other_service
300004Daily Operation Recordother_service
300910Safety Information Sheetother_service
300949Camshaft Rocker shaftother_service
300950Water jacketother_service
300952Intercooler (left side)other_service
500001thru QA6901.other_service
99260-20160other_service
GM14491Cap, sealingother_service
GM14569Guide, valveother_service
GM15167Nutother_service
GM15180Washer, springother_service
GM15518Cap, sealingother_service
GM36261Head assembly, cylinderother_service
GM36262Seat, inlet, standardother_service
GM36263Seat, inlet, 0.3 oversizedother_service
GM36264Seat, inlet, 0.6 oversizedother_service
GM36265Seat, exhaust, standardother_service
GM36266Seat, exhaust, 0.3 oversizedother_service
GM36267Seat, exhaust, 0.6 oversizedother_service
GM36270Studother_service
GM36271Connectorother_service
GM36272Bolt, cylinder headother_service
GM36273Bolt, cylinder headother_service
GM36274Washerother_service
GM57296Head assembly, cylinderother_service
GM57297Seat, inlet, standardother_service
GM57298Seat, inlet, 0.3 oversizedother_service
GM57299Seat, inlet, 0.6 oversizedother_service
SCR25Mitsubishi SCR systemother_service
300102Rust inhibitorrust_inhibitor
GM14529Washer, sealingseal
300105Silencer (precleaner)silencer
300947max. speed settingspeed_setting
300948Turbochargerturbocharger
300091Valves in pipelinevalve

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Common questions

What is the oil capacity of the Mitsubishi S12A2 PTA2-S?

The Mitsubishi S12A2 PTA2-S engine has an oil capacity of 120.0 liters.

What is the displacement of the Mitsubishi S12A2 PTA2-S?

The Mitsubishi S12A2 PTA2-S has a displacement of 33.93 liters with 12 cylinders.

Which generators use the Mitsubishi S12A2 PTA2-S engine?

The Mitsubishi S12A2 PTA2-S powers 3 generator set(s), including Mitsubishi MGS0900B, Mitsubishi MGS0900C, Talles HTW-920 T5.