Cylinder Head for Great Wall Poer: EPDM Rubber
This cylinder head for the Great Wall Poer is specified around epdm rubber, which decides how it behaves in service far more than the part name does. We build to a written specification — base material, dimensions, finish and packing — and hold that specification on file so every reorder reproduces the approved piece.
The usual reason a programme changes supplier is not unit price. It is warranty claims traced back to a single lot, or premature wear on the first batch. Both are specification problems, and both are preventable.

Specification
| Product | Cylinder Head |
|---|---|
| Vehicle application | Great Wall Poer |
| Material / finish | EPDM Rubber |
| Typical use | Wet Weather Riding |
| MOQ | 200 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 20-30 days after approval |
| Compliance | RoHS |
| Packing | 10 pieces per inner box, 1000 per carton |
Material options
- Bronze — the cost-effective default for volume programmes
- Aluminium Alloy — selected when the part is exposed to weather and road salt
- Carbon Fibre Composite — the cost-effective default for volume programmes
- Tempered Glass — specified where the part sits close to a heat source
- Brass — the cost-effective default for volume programmes

Processes available
- anodising
- gravity casting
- precision stamping
- sintering
- surface grinding
- shot blasting
Fitment notes
Check whether the mounting points on your market version match the catalogue drawing — regional variants are the usual cause of a wrong first order.
Where it is used
The specification above is the one most often ordered for wet weather riding. Related applications include adventure travel, food delivery, rental fleets, daily commuting, ride-hailing fleets.
Quality and packing
- In-line inspection with AQL 1.5 sampling on every lot.
- Dimensional report issued against the approved drawing.
- Carton marking and barcode to your specification.
- Golden sample retained at the factory as the reorder reference.
Questions buyers ask
What is the minimum order quantity?
The standard MOQ is 200 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
Can you match an existing sample?
Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.
What testing is included?
Standard lots ship with dimensional and hardness reports. RoHS documentation is issued with the shipment when your market requires it.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 200 pieces per line.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







