Radiator Cap for Audi A4: EPDM Rubber
This radiator cap for the Audi A4 is specified around epdm rubber, 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 documentation that arrived after the container shipped. Both are specification problems, and both are preventable.
Specification
| Product | Radiator Cap |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | EPDM Rubber |
| Typical use | Airport Ground Fleets |
| MOQ | 1,000 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | SAE J431 |
| Packing | 50 pieces per inner box, 1000 per carton |
Material options
- ABS Plastic — used when the finish has to hold a coating
- Forged Aluminium — specified where the part sits close to a heat source
- Titanium Alloy — selected when the part is exposed to weather and road salt
- Carbon Steel — the cost-effective default for volume programmes
- Brass — preferred when weight matters more than rigidity
Processes available
- precision stamping
- CNC machining
- powder coating
- heat treatment
- gravity casting
- die casting
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 airport ground fleets. Related applications include food delivery, farm use, wet weather riding, delivery fleets, rural transport.
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
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 the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the SAE J431-compliant build instead of a fresh interpretation.
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.
Send the specification you are working to and we will confirm what we can match, what we would change and why.
