Cabin Filter Housing for Audi A4: Cast Iron
This cabin filter housing for the Audi A4 is specified around cast iron, 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 | Cabin Filter Housing |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | Cast Iron |
| Typical use | Mining Sites |
| MOQ | 500 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 20-55 days after approval |
| Compliance | TUV |
| Packing | 50 pieces per inner box, 200 per carton |
Material options
- ABS Plastic — the cost-effective default for volume programmes
- Forged Aluminium — chosen where wear resistance comes first
- Tempered Glass — specified where the part sits close to a heat source
- Anodised Aluminium — used when the finish has to hold a coating
- Chromed Steel — used when the finish has to hold a coating

Processes available
- powder coating
- assembly line testing
- CNC machining
- gravity casting
- shot blasting
- electroplating
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 mining sites. Related applications include roadside assistance, farm use, wet weather riding, rural transport, daily commuting.
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.
What testing is included?
Standard lots ship with dimensional and hardness reports. TUV documentation is issued with the shipment when your market requires it.
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.
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.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.







