EPA engine family

Engine family 8WNGX.250AM5

If this code is printed on your emission label, this is your machine's federal record: sold under Wangliusa, Inc., with an engine built by Chongqing Loncin, certified as ATVs.

Displacement: —
Model years: 2008
Models certified: 24
Certificates: 1

What this record says

Sold in the US by: Wangliusa, Inc.
Engine built by: Chongqing Loncin
Vehicle category: ATVA-Meet EPA & ARB ATV Definition
Certificate numbers: 8WNGX.250AM5-001

What the number itself says

Reading 8WNGX.250AM5 left to right: 8 is the model-year letter for 2008, WNG is the three-character code the EPA assigned to Wangliusa as certificate holder, X marks an off-road certification, .250 is the displacement in litres, so 250cc and AM5 is Wangliusa'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 Wangliusa submitted for this family (model WL-ATV250A) carried engine code LC163ML-2. In the Chinese engine-model convention that reads as one cylinder with a nominal 63 mm bore, ML 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 "TWC, single bed, open loop". The head carries a pulse secondary-air (PAIR) valve.

Rated power on the record is 11.2 kW (about 15 hp) at 6,500 rpm, driving through a 5-speed manual gearbox.

Engine code on test vehicle: LC163ML-2
Nominal bore (from the code): 63 mm
Cylinders / valves: 1 · 2 per cylinder
Cycle: four-stroke
Fuel delivery: carburettor
Oxygen sensor: no
Engine control: ICM
Catalytic converter: TWC, single bed, open loop
Air injection: PAIR
Rated power: 11.2 kW (≈15 hp)
Rated speed: 6,500 rpm
Transmission: 5-speed manual gearbox
Sales area: 50S
Vehicle built by: Yongkang Wangli Hardware Manufactory Co., Ltd.
Test vehicle model: WL-ATV250A

Filing history and where it was sold

Wangliusa filed one certificate under this family, for model year 2008, sold as 50-state, California included.

The vehicle itself is recorded as built by Yongkang Wangli Hardware Manufactory Co., Ltd. in China, while the engine came from Chongqing Loncin. Chassis parts and engine parts therefore have different origins.

Certified emission levels: CO 10.8, HC 0.36, NOx 0.14 g/km.

What this configuration means when you shop for parts

Wangliusa certified the LC163ML-2 with a carburettor, so the fuel-side wear items are the carburettor, its jets and float needle, the intake boot and the choke. The 63 mm bore in the code gives the engine size, not the carburettor size — measure the intake bore and the mounting on the LC163ML-2 before ordering.

Wangliusa's 2008 the LC163ML-2 drives a manual gearbox, so clutch plates, chain and sprockets wear first — count the sprocket teeth on the WL-ATV250A before buying a chain.

The PAIR valve Wangliusa lists on the LC163ML-2 is an emissions part; its hoses perish and are the usual cause of popping on the overrun.

The exhaust on Wangliusa's 8WNGX.250AM5 carries a catalyst, so a replacement silencer without one changes what the LC163ML-2 was certified with.

Models certified under 8WNGX.250AM5

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.

WL-ATV200WA · WL-ATV200WB · WL-ATV200WC · WL-ATV200WD · WL-ATV200WE · WL-ATV200WF · WL-ATV200WG · WL-ATV200WH · WL-ATV250WA · WL-ATV250WB · WL-ATV250WC · WL-ATV250WD · WL-ATV250WE · WL-ATV250WF · WL-ATV250WG · WL-ATV250WH · WL-ATV260WA · WL-ATV260WB · WL-ATV260WC · WL-ATV260WD · WL-ATV260WE · WL-ATV260WF · WL-ATV260WG · WL-ATV260WH

Related in the registry

Source. US EPA annual certification data — EPA Certified Highway Motorcycle Test Results, MY2006-present; EPA Certified Off-Road Motorcycle / ATV / UTV / Rec Vehicle, MY2006-present. Retrieved 2026-09-07. Full provenance and method.