EPA engine family
Engine family CHSNX.800A20
If this code is printed on your emission label, this is your machine's federal record: sold under Hisun Motors Corp., U.S.A., with an engine built by Chongqing Huansong, certified as ATVs and UTVs and side-by-sides.
- Displacement
- 800cc
- Model years
- 2012
- Models certified
- 18
- Certificates
- 1
What this record says
- Sold in the US by
- Hisun Motors Corp., U.S.A.
- Engine built by
- Chongqing Huansong
- Vehicle category
- ATVB & UTV - EPA only
- Certificate numbers
- CHSNX.800A20-002-R01
What the number itself says
Reading CHSNX.800A20 left to right: C is the model-year letter for 2012, HSN is the three-character code the EPA assigned to Hisun Motors Corp., U.S.A. as certificate holder, X marks an off-road certification, .800 is the displacement in litres, so 800cc and A20 is Hisun Motors Corp., U.S.A.'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 certificate describes a four-stroke, twin-cylinder engine with 4 valves per cylinder fed by sequential multi-port fuel injection, with an oxygen sensor for closed-loop fuelling, run by an ignition control module (CDI-type ignition). 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 34.9 kW (about 47 hp) at 6,000 rpm, driving through a CVT (belt and variator).
- Cylinders / valves
- 2 · 4 per cylinder
- Cycle
- four-stroke
- Fuel delivery
- sequential multi-port fuel injection
- Oxygen sensor
- yes (closed loop)
- Engine control
- ICM
- Catalytic converter
- Three Way Catalyst (TWC), single-bed, closed-loop warm up
- Rated power
- 34.9 kW (≈47 hp)
- Rated speed
- 6,000 rpm
- Transmission
- CVT (belt and variator)
- Sales area
- 50S+49S
- Vehicle built by
- Chongqing Huansong Industries (Group) Co., Ltd.
- Test vehicle model
- HS 800UTV
Filing history and where it was sold
Hisun Motors Corp., U.S.A. filed one certificate under this family, for model year 2012, sold as both a 50-state and a 49-state version.
The vehicle itself is recorded as built by the same company, Chongqing Huansong Industries (Group) Co., Ltd. in China — engine and chassis from one source.
Certified emission levels: CO 4.6, HC+NOx 0.3 g/km.
Models certified under CHSNX.800A20
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.
BIG MUDDY EDGE 800 · BIGHORN 800 · COLEMAN 800 · Coleman Outfitter 800 · Coleman UT800 · HS 800ATV · HS 800ATV-2 · HS 800UTV · HS 800UTV-2 · METAL 800U · MSA 800 · MSU 800 · Metal 800U · QLINK FrontRunner 800S · SUPERMACH 800S · SUPERMACH 800U · Spire 800 · YS 800
Other American badges on engines from the same factory
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.