Product overview
The HENGJIAN relay (small) S3-YB300H-21-12 is an original electrical component developed for Hengjian 300 cc off-road motorcycles based on the S8-Z300 a compact control relay, it supports reliable switching of key circuits in the motorcycle's wiring harness while maintaining factory-spec performance.
Main features
- Genuine HENGJIAN small relay matching the original equipment specification.
- Compact design for easy integration in densely packed motorcycle wiring looms.
- Configured for stable operation in off-road conditions with vibration and temperature fluctuations.
- Factory-type terminals and layout to suit the original S3-YB300H-21-12 connector arrangement.
- Suitable as a direct replacement part during electrical maintenance or restoration.
Typical applications
This relay is used within the motorcycle's electrical system as an auxiliary control roles include switching and protecting circuits associated with chassis electronics on Hengjian S8-Z300 models.
- Replacement of worn or faulty original relay in the wiring harness.
- Restoration of factory electrical performance after troubleshooting intermittent faults.
- Preventive refresh of ageing electrical components on frequently used off-road machines.
- Keeping a spare relay on hand for race or trail support of Hengjian S8-Z300 motorcycles.
Technical details
| Manufacturer | HENGJIAN |
|---|
| Part type | Small relay, electrical component |
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| Manufacturer part number | S3-YB300H-21-12 |
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| Vehicle platform | Hengjian S8-Z300 300 cc off-road motorcycle family |
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| Installation position | Mounted within the motorcycle wiring harness as specified by the factory service documentation |
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Compatibility
The relay is specified for use in the Hengjian S8-Z300 with other models sharing the same electrical architecture depends on the original factory parts list.
| Brand | Model | Year |
|---|
| HENGJIAN | S8-Z300 | Not specified |
