Downpipe for Audi A4: Stainless Steel
This downpipe for the Audi A4 is specified around stainless steel, 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 lead time that slipped twice before bulk started, or a fitment that looked right on paper and failed on the bench. Both are specification problems, and both are preventable.
Specification
| Product | Downpipe |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | Stainless Steel |
| Typical use | Daily Commuting |
| MOQ | 1,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | TUV |
| Packing | 50 pieces per inner box, 1000 per carton |
Material options
- Forged Aluminium — preferred when weight matters more than rigidity
- Tempered Glass — chosen where wear resistance comes first
- Zinc Plated Steel — the cost-effective default for volume programmes
- PVC Coated Fabric — chosen where wear resistance comes first
- EPDM Rubber — chosen where wear resistance comes first
Processes available
- laser cutting
- CNC machining
- injection moulding
- shot blasting
- sintering
- powder coating
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 daily commuting. Related applications include security patrols, track days, farm use, night riding, long-distance touring.
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
What is the minimum order quantity?
The standard MOQ is 1000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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 TUV-compliant build instead of a fresh interpretation.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 1000 pieces per line.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.
