HENGJIAN Carburetor Assembly S7-Z300-19-02
The HENGJIAN carburetor assembly S7-Z300-19-02 is an original equipment fuel system component developed for the S7-Z300 engine family used in the Hengjian S8-Z300 293.2 cc water-cooled 2-stroke enduro is engineered to restore the precise fuel–air metering and throttle response specified by the manufacturer for intensive off-road use.
Key Features
- OEM HENGJIAN carburetor assembly matched to the S7-Z300 2-stroke single-cylinder engine.
- Designed for the Hengjian S8-Z300 enduro platform with 293.2 cc displacement and water cooling.
- Supplies the engine with accurately metered fuel–air mixture for strong, controllable power delivery.
- Suitable for demanding enduro and hard off-road riding conditions.
- Factory-type construction and tolerances for reliable sealing and long service life when maintained correctly.
Technical Overview
This carburetor assembly belongs to the S7-Z300 engine group, which powers the Hengjian S8-Z300 2-stroke enduro engine is a water-cooled, single-cylinder, 293.2 cc 2-stroke unit designed for strong mid-range torque and responsive acceleration in off-road environments.
| Manufacturer | HENGJIAN |
| OEM part number | S7-Z300-19-02 |
| Component type | Carburetor assembly (fuel and air metering) |
| Engine family | S7-Z300, 293.2 cc, 2-stroke, water-cooled single-cylinder |
| Vehicle application | Hengjian S8-Z300 enduro motorcycle, engine section |
Compatibility
The carburetor assembly S7-Z300-19-02 appears in the factory parts catalog within the engine section of the Hengjian S8-Z300 is intended as a direct-fit replacement for the original carburetor on this motorcycle platform.
| Brand | Model | Year |
| Hengjian | S8-Z300 (including variants built on the S7-Z300 engine) | Not specified |
Typical Use Cases
- Replacement of a worn, damaged or seized original carburetor on Hengjian S8-Z300 motorcycles.
- Restoring correct fuel atomization, cold starting behaviour and stable idle after extended use.
- Returning the engine to a stock fuel system configuration after non-standard modifications.
- Workshop and dealer service part for fast turnaround of S8-Z300 engine repairs.
Benefits for Off-Road Riding
- Consistent fuel delivery across a wide rpm range, supporting controllable traction in technical terrain.
- Factory-calibrated configuration tailored to the characteristics of the S8-Z300 2-stroke enduro engine.
- Carburetor-based fuel system that allows experienced technicians to fine-tune jetting for altitude, temperature and riding style using conventional carburetor set-up methods.
- OEM-grade materials and machining quality aimed at resisting vibration, contamination and frequent washing typical of enduro use.
Position in the Vehicle
The carburetor assembly S7-Z300-19-02 is located between the air intake tract and the cylinder intake port of the S8-Z300 forms a core part of the fuel system, working together with the airbox, intake manifold, reed valve, exhaust and ignition system to realise the power and rideability characteristics intended for the Hengjian S8-Z300 enduro motorcycle.
