Spark Plug for Audi A4: Reinforced Nylon
This spark plug for the Audi A4 is specified around reinforced nylon, 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 a specification nobody had written down, or a supplier who changed material without saying so. Both are specification problems, and both are preventable.
Specification
| Product | Spark Plug |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | Reinforced Nylon |
| Typical use | Off-Road Trails |
| MOQ | 500 pieces per specification |
| Sampling | 10 working days, 3 days per revision |
| Bulk lead time | 20-30 days after approval |
| Compliance | IATF 16949 |
| Packing | 100 pieces per inner box, 200 per carton |
Material options
- Natural Rubber — preferred when weight matters more than rigidity
- Carbon Steel — used when the finish has to hold a coating
- Aluminium Alloy — used when the finish has to hold a coating
- Powder Coated Steel — selected when the part is exposed to weather and road salt
- Semi-Metallic Compound — the cost-effective default for volume programmes
Processes available
- shot blasting
- assembly line testing
- powder coating
- anodising
- cold forging
- rubber vulcanisation
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 off-road trails. Related applications include roadside assistance, rural transport, motocross, urban courier work, food delivery.
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
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.
What testing is included?
Standard lots ship with dimensional and hardness reports. IATF 16949 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 IATF 16949-compliant build instead of a fresh interpretation.
How long does sampling take?
Samples leave the factory in 10 working days, and each revision round adds about 3 days once you have seen the first piece.
Send the specification you are working to and we will confirm what we can match, what we would change and why.
