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The Scooter Parts Registry

Owner's guide

Qj North America: finding your numbers, your engine and your parts

You own one. Here is what the federal certification record says about who actually built it, what to look for on the machine itself, and how to search for parts when the badge gets you nowhere.

Model years
2020–2026
Engine factories
4
Engine families
45
Badges alongside
3

Who built the engine in your Qj North America

Qj North America Inc. is the name on the certificate filed with the US EPA. That is the company that brought the machine into the country, not the company that built the engine. The record names 4 different Chinese engine factories across Qj North America's filings — which means the badge alone does not tell you which engine you have.

It changed, and the year tells you which

This is the most useful thing on the page if you are buying parts. Two Qj North America machines of different years can have engines from different factories, so a part that fits one may have nothing to do with the other.

Factory named on the certificate, by model year
Model yearEngine built by
2020Taizhou Handa Engine Science Co., Ltd.
2021Taizhou Handa Engine Science Co., Ltd. · Zhejiang Qianjiang
2022Taizhou Handa Engine Science Co., Ltd. · Zhejiang Qianjiang
2023Taizhou Handa Engine Science Co., Ltd. · Zhejiang Qianjiang
2024Ningbo Longjia Power Technology Co., Ltd. · Taizhou Handa Engine Science Co., Ltd. · Zhejiang Qianjiang
2025Ningbo Longjia Power Technology Co., Ltd. · Taizhou Handa Engine Science Co., Ltd. · Zhejiang Qianjiang
2026Chongqing Gaokin Industries Co., Ltd. · Ningbo Longjia Power Technology Co., Ltd. · Taizhou Handa Engine Science Co., Ltd. · Zhejiang Qianjiang

The numbers to find on the machine

Where these live depends on the shape of your machine rather than on the badge, so we do not repeat the search here — the sheets below cover it properly and are free. What matters for a Qj North America specifically is which number settles things: with 4 factories on the record, the engine family number is what tells you which engine you have.

  1. The emission control information label

    Carries the engine family number. This is the strongest identifier your machine has and the one most owners have never looked at.

  2. The code stamped into the crankcase

    Survives when the label has not. It encodes cylinder count, orientation, bore and displacement class.

  3. The VIN

    Identifies the vehicle rather than the engine, and its first three characters name whoever registered it for sale.

Engine families on the record for Qj North America

If the label under your seat carries one of these, it is a Qj North America and this is the certificate it was sold under.

Engine familyModel yearsDisplacement
LQJNX.169ATA2020150, 169cc
MQJNX.169ATA2021150, 169cc
MQJNX.169ATB2021150, 169cc
MQJNX.212GKA2021196, 212cc
NQJNX.169ATA2022150, 169cc
NQJNX.169ATB2022150, 169cc
NQJNX.212GKA2022196, 212cc
PQJNC.135MCA2023135cc
PQJNC0.30MCA2023300cc
PQJNC0.38MCA2023374cc
PQJNC0.50MCA2023500cc
PQJNX.169ATA2023150, 169cc
PQJNX.169ATB2023150, 169cc
PQJNX.212GKA2023196, 212cc
RQJNC.135MCA2024135cc
RQJNC.172LJB2024171.7cc
RQJNC.278LJC2024278.3cc
RQJNC0.30MCA2024300cc
RQJNC0.38MCA2024374cc
RQJNC0.50MCA2024500cc
RQJNX.169ATA2024150, 169cc
RQJNX.169ATB2024150, 169cc
RQJNX.212GKA2024196, 212cc
SQJNC.135MCA2025135cc
SQJNC.172LJB2025171.7cc
SQJNC.278LJC2025278.3cc
SQJNC.698MCA2025698cc
SQJNC0.30MCA2025300cc
SQJNC0.38MCA2025374cc
SQJNC0.50MCA2025500cc
SQJNX.169ATA2025150, 169cc
SQJNX.169ATB2025150, 169cc
SQJNX.212GKA2025196, 212cc
TQJNC.135MCA2026135cc
TQJNC.172LJB2026171.7cc
TQJNC.278LJC2026278.3cc
TQJNC.554QJA2026554cc
TQJNC.698MCA2026698cc
TQJNC.997GKA2026997cc
TQJNC0.30MCA2026300cc

Showing 40 of 45. All of them on the Qj North America record page.

The other names to search under

3 other US brands sold machines whose engines came from the same factory at the same displacement. When a search for “Qj North America” returns nothing, these are the names worth trying instead.

How to search for a part

Searching the badge is searching the weakest information you have. These are built from Qj North America's own record, roughly strongest first — replace <part> with what you need, and add the measurement you took.

  1. 1LQJNX.169ATA <part>
  2. 2150, 169cc <part>
  3. 3Chongqing 150, 169cc <part>
  4. 4Harley-Davidson Motor Company <part>
  5. 5Qj North America Inc. <part>

The strongest search usually has no badge in it at all. An engine family number plus a measurement finds listings from sellers who have never heard of Qj North America, which is most of them.

Free sheets to take to the machine

Or print all fifteen at once 44 pages covering identification, measurement, records and diagnosis. Free, no account, no email.

What this page does not tell you

This record covers certificates whose engines were built in China. Qj North America Inc. filed 45 certificate rows in total, of which 45 — all of them — are covered here.

It also cannot tell you that a part fits. A shared factory is a research lead — a list of other badges worth searching under — and nothing more. These machines are assembled from several component suppliers, and those suppliers change, sometimes inside a single model year. Why that is, and how to measure instead.

Elsewhere 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.