Yuchai

Yuchai YCMJ12620-D42

MJ12

In Production

The Yuchai YCMJ12620-D42 is a 11.73-litre inline-6 diesel engine for generator sets, rated at 500 kVA / 400 kWe standby power at 1,800 RPM (60 Hz). It is a liquid-cooled engine built in China.

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Manufacturer files: No datasheet
Last updated: 2026-05-29
Package route: diesel generator sets

Standby Power · 60 Hz: 500 kVA
Electrical Output: 400 kWe
Cylinders: L6
Displacement: 11.73 L
Rated Speed: 1,800 RPM

Power Ratings

kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf

60 Hz1800 RPM

	kWm	kWe	kVA
Prime Power	400	360	450
Standby Power	444.4	400	500

Yuchai YCMJ12620-D42 11.73L L6 diesel generator engine — 500 kVA standby specifications — Shareable spec cardYuchai YCMJ12620-D42 summary imageOpen image

Yuchai YCMJ12620-D42 generator set context

The Yuchai YCMJ12620-D42 is listed here as a diesel generator-drive engine for 60 Hz generator sets, with a headline 500 kVA / 400 kWe / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.

Also searched as

ycmj12620d42YCMJ12620 D42Yuchai YCMJ12620-D42

BrandAll Yuchai engines CompareSimilar engines Haifeng packagediesel generator sets

Technical Specifications

Brand	Yuchai
Model	YCMJ12620-D42
Series	MJ12
Configuration	L6
Cylinders	6
Displacement	11.73 L
Fuel Type	Diesel
Ignition Type	Compression Ignition
Cooling Method	Liquid-Cooled
Emissions Standard	China National Stage IV / Unregulated
Country of Origin	China

Frequently asked questions

What is the power output of the Yuchai YCMJ12620-D42?

The Yuchai YCMJ12620-D42 is rated at 500 kVA standby / 450 kVA prime at 60 Hz (1,800 rpm).

Does the YCMJ12620-D42 run at 50 Hz or 60 Hz?

The Yuchai YCMJ12620-D42 is rated for 60 Hz (1,800 rpm).

What fuel does the Yuchai YCMJ12620-D42 use?

The Yuchai YCMJ12620-D42 is a diesel generator-set engine.

What is the displacement and cylinder configuration of the YCMJ12620-D42?

The Yuchai YCMJ12620-D42 is an inline-6 (6-cylinder) engine with a displacement of 11.73 L.