HENGJIAN R Water Tank Assy S7-Z300-20.1-01
Product overview
The HENGJIAN R Water Tank Assy S7-Z300-20.1-01 is the genuine right-side main radiator assembly for the Hengjian S8-Z300 293.2 cm³, single-cylinder, liquid-cooled 2-stroke enduro forms a core element of the factory cooling system, helping the engine maintain stable operating temperatures during hard enduro, cross-country and intensive off-road use.
As an OEM assembly, this right-hand radiator matches the original S8-Z300 mounting geometry, hose routing and bodywork layout, ensuring precise fit on the motorcycle frame and seamless integration with the complete cooling circuit, including the left radiator, connecting pipes, fan and secondary water bottle components.
Key features
- Genuine HENGJIAN right-side water tank (radiator) assembly developed for the S8-Z300 liquid-cooling system.
- Engineered to manage the heat generated by the 293.2 cm³, single-cylinder, 2-stroke, water-cooled engine in demanding enduro conditions.
- Factory-correct mounting points and dimensions for the Hengjian S8-Z300 chassis and radiator shrouds.
- Designed to work in conjunction with the matching left water tank assembly (S7-Z300-20.1-08), inlet and outlet water pipes and associated cooling hardware.
- Suitable for high-load situations such as slow technical climbs, hard enduro sections and sustained cross-country special tests where consistent coolant flow is critical.
Technical details
| Specification | Detail |
| Manufacturer | HENGJIAN |
| Part type | Right-side main radiator assembly (water tank) |
| OEM part number | S7-Z300-20.1-01 |
| Motorcycle platform | Hengjian S8-Z300 293.2 cm³, single-cylinder, 2-stroke, water-cooled enduro motorcycle |
| Cooling system | Liquid-cooled engine with twin side-mounted radiators and dedicated cooling hardware |
| Position | Right-hand side of the S8-Z300 radiator pair |
| Associated components | Works together with left water tank assy S7-Z300-20.1-08, water pipes, fan unit and secondary water bottle elements within the S8-Z300 cooling circuit |
| Typical application | Enduro / off-road competition and intensive training use on Hengjian S8-Z300 motorcycles |
Typical applications
- Replacement of a damaged or deformed right radiator after impact, tip-over or stone strike in off-road riding.
- Restoration of cooling efficiency when existing radiator cores are blocked, bent or compromised.
- Building or refurbishing complete Hengjian S8-Z300 race, training or rental motorcycles where consistent cooling performance is required.
Role within the S8-Z300 platform
The Hengjian S8-Z300 platform relies on a compact, high-output 2-stroke engine tuned for aggressive enduro use, making effective heat management right water tank assembly contributes to balanced coolant distribution across the cylinder and head, supporting stable engine temperatures during both slow, technical riding and high-speed sections.
Using a matching OEM radiator assembly helps maintain the original cooling characteristics of the S8-Z300, ensuring that the engine, clutch and surrounding components operate within their intended temperature range over repeated heat cycles in demanding environments.
