Expansion Valve for Audi A4: Carbon Fibre Composite
This expansion valve for the Audi A4 is specified around carbon fibre composite, 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 reorders that did not match the approved sample, or premature wear on the first batch. Both are specification problems, and both are preventable.
Specification
| Product | Expansion Valve |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | Carbon Fibre Composite |
| Typical use | Passenger Transport |
| MOQ | 3,000 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 20-55 days after approval |
| Compliance | ISO/TS 16949 |
| Packing | 10 pieces per inner box, 1000 per carton |
Material options
- Anodised Aluminium — used when the finish has to hold a coating
- Kevlar Composite — selected when the part is exposed to weather and road salt
- Ceramic Composite — chosen where wear resistance comes first
- Bronze — chosen where wear resistance comes first
- Sintered Metal — used when the finish has to hold a coating
Processes available
- robot welding
- cold forging
- CNC machining
- precision stamping
- ultrasonic cleaning
- rubber vulcanisation
Fitment notes
Confirm the fitment against the VIN or the frame number before ordering; two model years often share a name and not a part.
Where it is used
The specification above is the one most often ordered for passenger transport. Related applications include passenger transport, adventure travel, mining sites, heavy load hauling, 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
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.
What is the minimum order quantity?
The standard MOQ is 3000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 3000 pieces per line.
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.
