Expansion Tank for Great Wall Poer: High Density Foam
This expansion tank for the Great Wall Poer is specified around high density foam, 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 premature wear on the first batch, or premature wear on the first batch. Both are specification problems, and both are preventable.

Specification
| Product | Expansion Tank |
|---|---|
| Vehicle application | Great Wall Poer |
| Material / finish | High Density Foam |
| Typical use | Track Days |
| MOQ | 3,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 20-30 days after approval |
| Compliance | ISO/TS 16949 |
| Packing | 50 pieces per inner box, 200 per carton |
Material options
- Stainless Steel — used when the finish has to hold a coating
- Sintered Metal — selected when the part is exposed to weather and road salt
- Neoprene — chosen where wear resistance comes first
- Nylon 66 — chosen where wear resistance comes first
- Brass — used when the finish has to hold a coating

Processes available
- injection moulding
- gravity casting
- powder coating
- sintering
- rubber vulcanisation
- ultrasonic cleaning
Fitment notes
Keep the old part until the new one is on the bench. Comparing them side by side settles questions a photograph never will.
Where it is used
The specification above is the one most often ordered for track days. Related applications include mountain roads, food delivery, coastal delivery, roadside assistance, track days.
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
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the ISO/TS 16949-compliant build instead of a fresh interpretation.
What happens if a lot fails inspection?
The lot is re-inspected against the golden sample, and replacement pieces ship on the next available booking at our cost.
What testing is included?
Standard lots ship with dimensional and hardness reports. ISO/TS 16949 documentation is issued with the shipment when your market requires it.
How long does sampling take?
Samples leave the factory in 7 working days, and each revision round adds about 3 days once you have seen the first piece.
Ask for the current catalogue and the specification sheet for this line.







