Silencer Box for Audi A4: Chromed Steel
This silencer box for the Audi A4 is specified around chromed 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 premature wear on the first batch, or a fitment that looked right on paper and failed on the bench. Both are specification problems, and both are preventable.

Specification
| Product | Silencer Box |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | Chromed Steel |
| Typical use | Weekend Riding |
| MOQ | 200 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 15-55 days after approval |
| Compliance | ISO/TS 16949 |
| Packing | 50 pieces per inner box, 500 per carton |
Material options
- Carbon Fibre Composite — chosen where wear resistance comes first
- Brass — chosen where wear resistance comes first
- Neoprene — selected when the part is exposed to weather and road salt
- Aluminium Alloy — used when the finish has to hold a coating
- Titanium Alloy — chosen where wear resistance comes first

Processes available
- powder coating
- die casting
- CNC machining
- laser cutting
- ultrasonic cleaning
- electroplating
Fitment notes
Keep the old part until the new one is on the bench. Comparing them side by side settles questions a photograph never will.
Where it is used
The specification above is the one most often ordered for weekend riding. Related applications include construction sites, passenger transport, wet weather riding, delivery fleets, night riding.
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.
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.
How long does sampling take?
Samples leave the factory in 10 working days, and each revision round adds about 5 days once you have seen the first piece.
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.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







