HENGJIAN Rear Cover of Air Filter S7-Z300-13.1-05
The HENGJIAN rear cover of air filter S7-Z300-13.1-05 is a genuine OEM airbox component designed for the Hengjian S8-Z300 enduro closes the rear of the air filter housing and links to the front section of the rear fender area, protecting the foam filter from mud, dust and splash while helping to maintain a reliable seal and stable airflow into the engine.
Main features
- Genuine HENGJIAN spare part with OEM reference S7-Z300-13.1-05 for accurate fitment and geometry.
- Forms the rear section of the airbox, shielding the air filter element from roost, water and trail debris thrown up by the rear wheel.
- Injection-moulded OEM-grade plastic for impact resistance and flexibility under off-road use.
- Pre-formed mounting points compatible with the original fasteners for straightforward installation.
- Maintains correct airbox sealing to support consistent engine breathing and filtration performance.
- Designed to integrate with the stock air filter and airbox assembly used on Hengjian S8-Z300 models.
Technical details
| Manufacturer | HENGJIAN |
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| OEM reference / SKU | S7-Z300-13.1-05 |
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| Product type | Rear cover of air filter (rear airbox cover / body panel) |
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| Assembly location | Rear side of the airbox, at the front of the rear fender and under-seat area |
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| Compatible model family | Hengjian S8-Z300 enduro models using the S7-Z300-13.1 airbox assembly |
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| Vehicle type | Off-road / enduro motorcycle |
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| Material | OEM-grade injection-moulded plastic, designed for off-road impacts and flex |
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| Function | Protects the air filter, closes the rear of the airbox and contributes to dust- and splash-resistant sealing |
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Compatibility overview
The S7-Z300-13.1-05 rear air filter cover is part of the original bodywork and airbox system on the Hengjian S8-Z300 enduro series, including configurations built around the same chassis and airbox design.
| Brand | Model | Year |
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| Hengjian | S8-Z300 (including base and Race Version) | Not specified by manufacturer |
Typical use cases
- Replacement for a cracked, warped or missing rear air filter cover caused by crashes, tip-overs or transport damage.
- Restoration of correct airbox sealing on used Hengjian S8-Z300 motorcycles where the original cover is worn or distorted.
- Refresh of plastics on race-prepared or training bikes to match the original airbox and rear fender alignment.
- Maintaining the effectiveness of the stock air filtration system in dusty, muddy or wet enduro conditions.
