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The Scooter Parts Registry

EPA engine family

Engine family NQJNX.169ATA

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.169ATA-003

What the number itself says

Reading NQJNX.169ATA 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 ATA 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 multi-point fuel injection, with an oxygen sensor for closed-loop fuelling, run by an engine control module (ECM). There is a catalytic converter in the exhaust, recorded as "Three Way Catalyst (TWC), single-bed, closed-loop warm up".

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
multi-point fuel injection
Oxygen sensor
yes (closed loop)
Engine control
ECM
Catalytic converter
Three Way Catalyst (TWC), single-bed, closed-loop warm up
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 3, HC+NOx 1.1 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.169ATA

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.

150E XRS · 150E XRX · 200E XRS · 200E XRX · AT150E · AT200E · BLAZER 150E · BLAZER 200E · BLAZER4 150E · BLAZER4 200E · CHALLENGER 150E · CHALLENGER 200E · CHALLENGER 4 150E · CHALLENGER4 200E · CHEETAH 200E · CHEETAH 150E · 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.