Engine family 8ZTWC.150SAA

What this record says

Sold in the US by

Zhejiang Taizhou Wangye Power (Usa) Co., Ltd.

Engine built by

Zhejiang Taizhou Wangye Power

Vehicle category

Highway Motorcycle - Ib (50-169cc)

Certificate numbers

8ZTWC.150SAA-002

What the number itself says

Reading 8ZTWC.150SAA left to right: 8 is the model-year letter for 2008, ZTW is the three-character code the EPA assigned to Zhejiang Taizhou Wangye Power (Usa) as certificate holder, C marks a highway (street-legal) certification, .150 is the displacement in litres, so 150cc and SAA is Zhejiang Taizhou Wangye Power (Usa)'s own sequence for that year. Nothing in the number names the factory — that comes from the certificate itself.

The engine, as described on the certificate

The test vehicle Zhejiang Taizhou Wangye Power (Usa) submitted for this family (model WY150T-3) carried engine code 157QMJ. In the Chinese engine-model convention that reads as one cylinder with a nominal 57 mm bore, QMJ series.

The certificate describes a four-stroke, single-cylinder engine with 2 valves per cylinder fed by carburettor, run by an ignition control module (CDI-type ignition). There is a catalytic converter in the exhaust, recorded as "oxidizing catalyst only". The head carries a pulse secondary-air (PAIR) valve.

Rated power on the record is 5.9 kW (about 8 hp) at 7,000 rpm, driving through an automatic.

Engine code on test vehicle

157QMJ

Nominal bore (from the code)

57 mm

Cylinders / valves

1 · 2 per cylinder

Cycle

four-stroke

Fuel delivery

carburettor

Oxygen sensor

no

Engine control

ICM

Catalytic converter

oxidizing catalyst only

Air injection

PAIR

Rated power

5.9 kW (≈8 hp)

Rated speed

7,000 rpm

Transmission

automatic

Sales area

49S

Vehicle built by

Zhejiang Taizhou Wangye Power Co., Ltd.

Test vehicle model

WY150T-3

Filing history and where it was sold

Zhejiang Taizhou Wangye Power (Usa) filed one certificate under this family, for model year 2008, sold as 49-state (not certified for sale in California).

The vehicle itself is recorded as built by the same company, Zhejiang Taizhou Wangye Power Co., Ltd. in China — engine and chassis from one source.

Certified emission levels: CO 5.2, HC 0.20, NOx 0.26 g/km.

Other records carrying the same engine code

Zhejiang Taizhou Wangye Power (Usa) certified an engine with this code under one other family number — the same engine filed again in another year, or in an off-road and a street version:

• 8ZTWC.050SAA (2008)

Other certificate holders whose test vehicle carried the same engine code (10 of 50 shown):

• Wangye USA Co., LLCHWGYC0.15S4A2017 · same engine factory
• Wangye USA Co., LLCFWGYC0.15S4A2015 · same engine factory
• Xracer Sports Company Limited8XCRX.150AAA2008 · same engine factory
• Earthstone Studio LLC Dba Owl Scooter9OWLC.150MD12009 · different engine factory
• Jass Motorsports Inc.GJASX.150GKA2016 · different engine factory
• Jolly Motor LLCTJMLC0.15MC12026 · different engine factory
• Jolly Motor LLCSJMLC0.15MC12025 · different engine factory
• Jolly Motor LLCRJMLC0.15MC12024 · different engine factory
• Jolly Motor LLCPJMLC0.15MC12023 · different engine factory
• Jolly Motor LLCNJMLC0.15MC12022 · different engine factory

A shared code from the same factory is a strong search lead. From a different factory it is as often a naming coincidence. Either way it narrows the search; it does not settle it — measure before you buy.

Models certified under 8ZTWC.150SAA

Every model designation the importer listed on this certificate. If your machine's model name appears here, this is the right record — even if the name on the bodywork is slightly different.

WY125T-10 · WY125T-11 · WY125T-16 · WY125T-17 · WY125T-20 · WY125T-21 · WY125T-23 · WY125T-41 · WY125T-50 · WY125T-52 · WY125T-55 · WY125T-56 · WY125T-57 · WY125T-58 · WY125T-9 · WY150-5 · WY150T · WY150T-12 · WY150T-15 · WY150T-16 · WY150T-17 · WY150T-18 · WY150T-2 · WY150T-20 · WY150T-21 · WY150T-22 · WY150T-23 · WY150T-28 · WY150T-3 · WY150T-5 · WY150T-52 · WY150T-7 · WY150T-8 · WY150T-9

Other American badges on engines from the same factory

• Zhejiang Taizhou Wangye Power · 49-50cc3 American brands · 2007–2015