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The Scooter Parts Registry

EPA engine family

Engine family NQJNX.169ATB

If this code is printed on your emission label, this is your machine's federal record: sold under Qj North America Inc., with an engine built by Taizhou Handa Engine Science Co., Ltd, certified as ATVs.

Displacement
—
Model years
2022
Models certified
17
Certificates
1

What this record says

Sold in the US by
Qj North America Inc.
Engine built by
Taizhou Handa Engine Science Co., Ltd.
Vehicle category
ATVB-Meeting EPA ATV Definition
Certificate numbers
NQJNX.169ATB-002

What the number itself says

Reading NQJNX.169ATB left to right: N is the model-year letter for 2022, QJN is the three-character code the EPA assigned to Qj North America as certificate holder, X marks an off-road certification, .169 is the displacement in litres, so 169cc and ATB is Qj North America'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 Qj North America submitted for this family (model GK200-01) carried engine code 161QMK-A. In the Chinese engine-model convention that reads as one cylinder with a nominal 61 mm bore, QMK series.

The certificate describes a four-stroke, single-cylinder engine with 2 valves per cylinder fed by carburettor. There is a catalytic converter in the exhaust, recorded as "TWC, single bed, open loop".

Rated power on the record is 7.6 kW (about 10 hp) at 7,000 rpm, driving through an automatic.

Engine code on test vehicle
161QMK-A
Nominal bore (from the code)
61 mm
Cylinders / valves
1 · 2 per cylinder
Cycle
four-stroke
Fuel delivery
carburettor
Oxygen sensor
no
Engine control
other
Catalytic converter
TWC, single bed, open loop
Rated power
7.6 kW (≈10 hp)
Rated speed
7,000 rpm
Transmission
automatic
Sales area
49S
Vehicle built by
Zhejiang trail-blazer manufacturing Co., Ltd.
Test vehicle model
GK200-01

Filing history and where it was sold

Qj North America filed one certificate under this family, for model year 2022, sold as 49-state (not certified for sale in California).

The vehicle itself is recorded as built by Zhejiang trail-blazer manufacturing Co., Ltd. in China, while the engine came from Taizhou Handa Engine Science Co., Ltd. Chassis parts and engine parts therefore have different origins.

Certified emission levels: CO 9, HC+NOx 0.6 g/km.

Other records carrying the same engine code

Qj North America certified an engine with this code under 12 other family numbers — the same engine filed again in another year, or in an off-road and a street version:

Other certificate holders whose test vehicle carried the same engine code:

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 NQJNX.169ATB

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.

150 XRS · 150 XRX · 200 XRS · 200 XRX · AT150 · AT200 · BLAZER 150 · BLAZER 200 · BLAZER4 150 · BLAZER4 200 · CHALLENGER 150 · CHALLENGER 200 · CHALLENGER 4 150 · CHALLENGER 4 200 · CHEETAH 200 · CHEETAH 150 · K5

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.