Downpipe for Audi A4: Aluminium Alloy
This downpipe for the Audi A4 is specified around aluminium alloy, 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 a supplier who changed material without saying so. Both are specification problems, and both are preventable.
Specification
| Product | Downpipe |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | Aluminium Alloy |
| Typical use | Ride-Hailing Fleets |
| MOQ | 1,000 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 25-30 days after approval |
| Compliance | ECE R90 |
| Packing | 100 pieces per inner box, 500 per carton |
Material options
- Anodised Aluminium — the cost-effective default for volume programmes
- Semi-Metallic Compound — selected when the part is exposed to weather and road salt
- Sintered Metal — chosen where wear resistance comes first
- Stainless Steel — chosen where wear resistance comes first
- Nylon 66 — the cost-effective default for volume programmes
Processes available
- anodising
- cold forging
- rubber vulcanisation
- sintering
- laser cutting
- injection moulding
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 ride-hailing fleets. Related applications include adventure travel, construction sites, airport ground fleets, mining sites, delivery 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
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 testing is included?
Standard lots ship with dimensional and hardness reports. ECE R90 documentation is issued with the shipment when your market requires it.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 1000 pieces per line.
Can you match an existing sample?
Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.
Send the specification you are working to and we will confirm what we can match, what we would change and why.
