Expansion Tank for GMC Sierra: Polypropylene
This expansion tank for the GMC Sierra is specified around polypropylene, 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 packing that arrived crushed at the port, or a specification nobody had written down. Both are specification problems, and both are preventable.
Specification
| Product | Expansion Tank |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Polypropylene |
| Typical use | Passenger Transport |
| MOQ | 200 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 20-40 days after approval |
| Compliance | ECE R90 |
| Packing | 10 pieces per inner box, 200 per carton |
Material options
- Aluminium Alloy — chosen where wear resistance comes first
- Cast Iron — selected when the part is exposed to weather and road salt
- PVC Coated Fabric — selected when the part is exposed to weather and road salt
- Sintered Metal — chosen where wear resistance comes first
- Brass — used when the finish has to hold a coating
Processes available
- shot blasting
- heat treatment
- rubber vulcanisation
- ultrasonic cleaning
- precision stamping
- anodising
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 passenger transport. Related applications include airport ground fleets, mountain roads, wet weather riding, heavy load hauling, off-road trails.
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 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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the ECE R90-compliant build instead of a fresh interpretation.
How is packing specified?
Individual packing, inner box quantity and carton marking are confirmed at quotation stage so the cartons arrive ready for your warehouse.
What testing is included?
Standard lots ship with dimensional and hardness reports. ECE R90 documentation is issued with the shipment when your market requires it.
Ask for the current catalogue and the specification sheet for this line.
