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Mitsubishi S12H-PTA-S Engine

Name: Mitsubishi S12H-PTA-S Engine
Brand: Mitsubishi

The Mitsubishi S12H-PTA-S is a 37.1 L 12-cylinder turbocharged engine rated at 1500 rpm, producing up to 8400 kW. It powers generator sets from Mitsubishi, including the M1100, MGS1000B and MGS1000HV. It holds 14 L (3.7 gal) of oil and 200 L (52.8 gal) of coolant.

Also known as: Mitsubishi S12H-PTA-S

Part of the Mitsubishi S12H-PTA engine family — 2 variants share parts & fitment.

37.1 L

Displacement

Cylinders

1500 rpm

Rated speed

8400 kW

Gross power

On this pageSpecs Generator sets Maintenance FAQ

Engine specifications

Oil capacity	14.0 L
Coolant capacity	200.0 L
Displacement	37.1 L
Cylinders	12
Aspiration	turbocharged
Rated speed	1500 rpm
Gross power	8400 kW

Generator sets powered by this engine

Mitsubishi M1100Mitsubishi MGS1000B Mitsubishi MGS1000HV

How to read your Mitsubishi engine serial & model number →

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Air filter	ELEMENT, CTRG.		35C40-11100		eBay $98.00 KuduParts $24.00
Fuel filter	ELEMENT, CTR F/F L.O		32562-60300		eBay $38.50 FridayParts $34.00
Oil filter	refer to Operation & Maintenance manual		—	200 hr
Battery			—
Belt	V-BELT, RAW EDGE NR-1		37549-09820		eBay $85.00 FridayParts $125.83
Coolant		231.0	—
Oil		200.0 liter	—
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 S12H-PTA family

Part #	Description	Category
35A40-01800	ELEMENT B/P CTRG	air_filter
35C40-11100	ELEMENT, CTRG.	air_filter
35B68-04100	BELT, L3H COG 32	belt
37549-09810	V-BELT, RAW EDGE NR-1	belt
37549-09820	V-BELT, RAW EDGE NR-1	belt
32562-60300	ELEMENT, CTR F/F L.O	fuel_filter
35B94-60100	GASKET KIT, OVERHAUL	gasket
35C04-01501	GASKET, ROCKER COVER	gasket
37561-16800	GASKET, NOZZLE, T2	gasket
35C65-05400	N/T, MINI 10-.27HF	injector
37560-07800	N/T, MINI 10-.29HF160	injector
35B94-00201	SEAL KIT, OIL	seal

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 S12H-PTA-S?

The Mitsubishi S12H-PTA-S engine has an oil capacity of 14.0 liters.

What is the displacement of the Mitsubishi S12H-PTA-S?

The Mitsubishi S12H-PTA-S has a displacement of 37.1 liters with 12 cylinders.

Which generators use the Mitsubishi S12H-PTA-S engine?

The Mitsubishi S12H-PTA-S powers 3 generator set(s), including Mitsubishi M1100, Mitsubishi MGS1000B, Mitsubishi MGS1000HV.