Drier Bottle for Audi A4: Tempered Glass
This drier bottle for the Audi A4 is specified around tempered glass, 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 lead time that slipped twice before bulk started. Both are specification problems, and both are preventable.

Specification
| Product | Drier Bottle |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | Tempered Glass |
| Typical use | Daily Commuting |
| MOQ | 500 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 20-30 days after approval |
| Compliance | RoHS |
| Packing | 10 pieces per inner box, 1000 per carton |
Material options
- Polypropylene — specified where the part sits close to a heat source
- Sintered Metal — selected when the part is exposed to weather and road salt
- Zinc Plated Steel — chosen where wear resistance comes first
- Carbon Fibre Composite — selected when the part is exposed to weather and road salt
- Aluminium Alloy — used when the finish has to hold a coating

Processes available
- ultrasonic cleaning
- rubber vulcanisation
- heat treatment
- precision stamping
- surface grinding
- gravity casting
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 daily commuting. Related applications include wet weather riding, mountain roads, motocross, security patrols, urban courier work.
Quality and packing
- In-line inspection with AQL 2.5 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
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 500 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.
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. RoHS documentation is issued with the shipment when your market requires it.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







