Idler Pulley for Audi A4: PU Leather
This idler pulley for the Audi A4 is specified around pu leather, 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 reorders that did not match the approved sample, or a specification nobody had written down. Both are specification problems, and both are preventable.

Specification
| Product | Idler Pulley |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | PU Leather |
| Typical use | Long-Distance Touring |
| MOQ | 3,000 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | TUV |
| Packing | 100 pieces per inner box, 200 per carton |
Material options
- Nylon 66 — chosen where wear resistance comes first
- Carbon Fibre Composite — used when the finish has to hold a coating
- EPDM Rubber — preferred when weight matters more than rigidity
- PVC Coated Fabric — the cost-effective default for volume programmes
- Aluminium Alloy — preferred when weight matters more than rigidity

Processes available
- surface grinding
- shot blasting
- ultrasonic cleaning
- laser cutting
- assembly line testing
- cold forging
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 long-distance touring. Related applications include daily commuting, night riding, long-distance touring, rural transport, delivery fleets.
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
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.
How is packing specified?
Individual packing, inner box quantity and carton marking are confirmed at quotation stage so the cartons arrive ready for your warehouse.
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.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







