Blower Motor for Audi A4: Cast Iron
This blower motor 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 documentation that arrived after the container shipped, or a supplier who changed material without saying so. Both are specification problems, and both are preventable.

Specification
| Product | Blower Motor |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | Cast Iron |
| Typical use | Track Days |
| MOQ | 500 pieces per specification |
| Sampling | 10 working days, 3 days per revision |
| Bulk lead time | 20-40 days after approval |
| Compliance | DOT |
| Packing | 100 pieces per inner box, 1000 per carton |
Material options
- Carbon Fibre Composite — chosen where wear resistance comes first
- Stainless Steel — specified where the part sits close to a heat source
- Bronze — preferred when weight matters more than rigidity
- Semi-Metallic Compound — the cost-effective default for volume programmes
- Forged Aluminium — preferred when weight matters more than rigidity

Processes available
- injection moulding
- cold forging
- gravity casting
- sintering
- heat treatment
- shot blasting
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 track days. Related applications include farm use, off-road trails, rural transport, wet weather riding, security patrols.
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 is the minimum order quantity?
The standard MOQ is 500 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. DOT documentation is issued with the shipment when your market requires it.
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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the DOT-compliant build instead of a fresh interpretation.
Ask for the current catalogue and the specification sheet for this line.







