Expansion Tank for Audi Q5: Cast Iron
This expansion tank for the Audi Q5 is specified around cast iron, 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 a supplier who changed material without saying so, or lead time that slipped twice before bulk started. Both are specification problems, and both are preventable.
Specification
| Product | Expansion Tank |
|---|---|
| Vehicle application | Audi Q5 |
| Material / finish | Cast Iron |
| Typical use | Urban Courier Work |
| MOQ | 2,000 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 25-30 days after approval |
| Compliance | ISO/TS 16949 |
| Packing | 50 pieces per inner box, 200 per carton |
Material options
- Zinc Plated Steel — the cost-effective default for volume programmes
- ABS Plastic — specified where the part sits close to a heat source
- Polypropylene — chosen where wear resistance comes first
- Tempered Glass — selected when the part is exposed to weather and road salt
- Cast Iron — preferred when weight matters more than rigidity
Processes available
- CNC machining
- sintering
- anodising
- gravity casting
- assembly line testing
- laser cutting
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 urban courier work. Related applications include track days, adventure travel, off-road trails, mountain roads, rental fleets.
Quality and packing
- In-line inspection with AQL 4.0 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
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 2000 pieces per line.
How long does sampling take?
Samples leave the factory in 7 working days, and each revision round adds about 5 days once you have seen the first piece.
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 ISO/TS 16949-compliant build instead of a fresh interpretation.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.
