Weichai

Weichai 12M26D660E301NG

M26 Series

In Production

The Weichai 12M26D660E301NG is a 31.2-litre V12 natural gas engine for generator sets, rated at 688 kVA / 550 kWe prime power at 1,500 RPM (50 Hz). It is a liquid-cooled engine built in China.

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Manufacturer files: No datasheet
Last updated: 2026-06-08
Package route: gas generator sets

Prime Power · 50 Hz: 688 kVA
Electrical Output: 550 kWe
Cylinders: V12
Displacement: 31.2 L
Rated Speed: 1,500 / 1,800 RPM

Power Ratings

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

50 Hz1500 RPM

	kWm	kWe	kVA
Prime Power	600	550	687.5

60 Hz1800 RPM

	kWm	kWe	kVA
Standby Power	600	540	675

Weichai 12M26D660E301NG 31.2L V12 natural gas generator engine — 688 kVA prime specifications — Shareable spec cardWeichai 12M26D660E301NG summary imageOpen image

Weichai 12M26D660E301NG generator set context

The Weichai 12M26D660E301NG is listed here as a natural gas generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 688 kVA / 550 kWe / prime 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

12m26d660e301ngWeichai 12M26D660E301NGM26 Series 12M26D660E301NG

BrandAll Weichai engines CompareSimilar engines Haifeng packagegas generator sets

Technical Specifications

Brand	Weichai
Model	12M26D660E301NG
Series	M26 Series
Configuration	V12
Cylinders	12
Displacement	31.2 L
Fuel Type	Natural Gas
Ignition Type	Spark Ignition
Cooling Method	Liquid-Cooled
Emissions Standard	Unregulated
Country of Origin	China

Frequently asked questions

What is the power output of the Weichai 12M26D660E301NG?

The Weichai 12M26D660E301NG is rated at 688 kVA prime at 50 Hz (1,500 rpm); and 675 kVA standby at 60 Hz (1,800 rpm).

Does the 12M26D660E301NG run at 50 Hz or 60 Hz?

The Weichai 12M26D660E301NG is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).

What fuel does the Weichai 12M26D660E301NG use?

The Weichai 12M26D660E301NG is a Natural Gas generator-set engine.

What is the displacement and cylinder configuration of the 12M26D660E301NG?

The Weichai 12M26D660E301NG is a V12 (12-cylinder) engine with a displacement of 31.2 L.