Spark Plug for BMW 3 Series: Ceramic Composite
This spark plug for the BMW 3 Series is specified around ceramic composite, 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 warranty claims traced back to a single lot, or warranty claims traced back to a single lot. Both are specification problems, and both are preventable.
Specification
| Product | Spark Plug |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Ceramic Composite |
| Typical use | Off-Road Trails |
| MOQ | 1,000 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | DOT |
| Packing | 50 pieces per inner box, 200 per carton |
Material options
- Sintered Metal — chosen where wear resistance comes first
- Nylon 66 — selected when the part is exposed to weather and road salt
- Brass — preferred when weight matters more than rigidity
- Carbon Steel — the cost-effective default for volume programmes
- Forged Aluminium — specified where the part sits close to a heat source
Processes available
- die casting
- precision stamping
- powder coating
- electroplating
- cold forging
- shot blasting
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 off-road trails. Related applications include rental fleets, security patrols, mountain roads, long-distance touring, roadside assistance.
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
What testing is included?
Standard lots ship with dimensional and hardness reports. DOT documentation is issued with the shipment when your market requires it.
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.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 1000 pieces per line.
How long does sampling take?
Samples leave the factory in 10 working days, and each revision round adds about 5 days once you have seen the first piece.
Ask for the current catalogue and the specification sheet for this line.
