Engine family
Yuchai generator engines: who makes them, the series, and how to check them
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Sinospect supplies generating sets from China with the engine series on the quotation and the maker and plant in the order contract, and checks each engine’s dataplate against the order before it ships. To have an offer checked, send it: we reply with what the review would cover and any fee, before paid work begins. Send the offer you want checked →
Who makes Yuchai engines
Guangxi Yuchai Machinery Co., Ltd. was founded in 1992, is headquartered in Yulin, Guangxi, and has production bases in Guangxi, Jiangsu, Anhui and Shandong (Yuchai). China Yuchai International, a Bermuda company established in 1993, headquartered in Singapore and listed in New York (NYSE: CYD), holds 76.4% of it through six subsidiaries; its own parent is Hong Leong Asia (CYI). The state-owned Guangxi Yuchai Machinery Group, dating from 1951, is a separate company with more than 20 subsidiaries (Yuchai Group).
Yuchai lists MTU-Yuchai among its subsidiaries (Yuchai), and its Chinese power-generation page says it produces MTU S4000-series engines locally (Yuchai). China Yuchai International says MTU Yuchai Power, set up in January 2017, is a 50-50 joint venture of its marine and genset subsidiary and MTU Friedrichshafen (CYI 20-F, 2025). It builds Series 4000 engines in Yulin and, since 2025, Series 2000 engines in Suzhou (Rolls-Royce). An MTU engine from that source is an MTU design built in China; an offer should say so.
The G-drive series
Yuchai gives its G-drive range as 15 to 4,200 kW on 10 platforms (Yuchai, English); its Chinese site gives 0.9 to 4,640 kW including the MTU S4000. The list gives one power range per series, without saying whether it is prime or standby:
Source: Yuchai G-drive product list, English site; prime or standby not stated.
| Series | Engine power, kW | Matched genset, kW |
|---|---|---|
| YC4D | 53–132 | 45–110 |
| YC4A | 110–152 | 90–132 |
| YC6A | 125–223 | 110–190 |
| YC6MK, YC6MJ | 235–441 | 200–400 |
| YC6K | 335–441 | not given |
| YC6T, YC6TD | 441–784 | 400–660 |
| YC6C | 681–1,221 | 600–1,100 |
| YC12VC | 1,120–2,205 | 1,000–2,000 |
| MTU 4000 series | 1,190–3,490 | not given |
Yuchai’s Chinese list adds the YC16VTD (1,520–1,985 kW), YC12VTD (900–1,520 kW), YC16VC (2,005–3,608 kW), YC6TF (1,118–1,221 kW), YC6TH (715–990 kW), YC6TC (561–735 kW) and YCDV25 (20–55 kW). On 24 October 2025, China Yuchai International announced the YC16VTF, a 16-cylinder V engine of up to 3,971 kW for 50 and 60 Hz sets (announcement). Ask the seller for the prime and standby figures of the exact model on the offer.
Emissions and warranty
Yuchai says its G-drive engines meet China’s non-road Stage III and have CE and China telecom-industry (TLC) certification (Yuchai). For a set going to a market with its own engine rules, ask for the certificate that covers the exact engine. We found no published Yuchai genset-engine warranty: the only engine warranty policies on its site cover China VI trucks and buses (Yuchai).
Checking the engine and its parts
Yuchai publishes an authenticity query for parts with its new anti-counterfeit code (Yuchai) and a 24-hour service line, +86 95098. We found no nameplate layout, serial-number format or whole-engine check from Yuchai, so the check rests on the dataplate of the actual engine:
- Model and serial number on the engine’s dataplate, photographed on the unit for your order.
- The legal maker on the plate and the offer: Guangxi Yuchai Machinery, MTU-Yuchai or another entity.
- Prime and standby ratings for that model, in writing.
- The production date against “new production”.
- At the factory test, the same serial number on the engine, the test report and the packing list.
Frequently asked questions
Who owns Yuchai?
The engine maker, Guangxi Yuchai Machinery Co., Ltd., is 76.4% held by China Yuchai International, a Bermuda company headquartered in Singapore and listed in New York (NYSE: CYD), whose parent is Hong Leong Asia. A separate, state-owned Guangxi Yuchai Machinery Group holds more than 20 subsidiaries. An offer should name the legal entity that made the engine.
Does Yuchai build MTU engines?
Through a joint venture. MTU Yuchai Power, set up in January 2017, is owned 50-50 by a Yuchai subsidiary and MTU. It builds MTU Series 4000 engines for power generation in Yulin and, since 2025, Series 2000 engines in Suzhou; Yuchai’s English G-drive list includes the MTU 4000 series at 1,190 to 3,490 kW. Those are MTU designs built in China. An offer with an MTU engine should say where it was built.
What is the largest Yuchai generator engine?
Yuchai’s Chinese list gives the YC16VC at 2,005 to 3,608 kW. On 24 October 2025 China Yuchai International announced the YC16VTF, a 16-cylinder V engine with a maximum output of 3,971 kW for 50 and 60 Hz sets.
What warranty do Yuchai genset engines carry?
Yuchai publishes no warranty for its genset engines; the only engine warranty policies on its site are for China VI trucks and buses. Get the engine warranty, who holds it and who handles a claim in your country in writing from the seller.
Yuchai-engined sets
Sinospect quotes generating sets with the engine series on the quotation and the maker and plant in the order contract, and on sets bought directly witnesses the factory test: see generator FAT witnessing. The other engine families are on the engine makers page, and the buyer’s guide covers ratings, offers and the load test.
Looking at a Yuchai-engined set from China?
Send the offer you have. A review checks the engine named against Yuchai’s data; the dataplate is checked when the unit is inspected. We reply with the review’s scope and any fee before paid work begins. To buy a set from us instead, see the generating-set offer.