Cylinder Head for BMW 3 Series: Silicone
This cylinder head for the BMW 3 Series is specified around silicone, 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 premature wear on the first batch. Both are specification problems, and both are preventable.
Specification
| Product | Cylinder Head |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Silicone |
| Typical use | Weekend Riding |
| MOQ | 3,000 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 20-55 days after approval |
| Compliance | ISO/TS 16949 |
| Packing | 50 pieces per inner box, 500 per carton |
Material options
- Cast Iron — selected when the part is exposed to weather and road salt
- Aluminium Alloy — preferred when weight matters more than rigidity
- Natural Rubber — the cost-effective default for volume programmes
- Powder Coated Steel — chosen where wear resistance comes first
- Magnesium Alloy — chosen where wear resistance comes first
Processes available
- rubber vulcanisation
- injection moulding
- robot welding
- sintering
- CNC machining
- 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 weekend riding. Related applications include off-road trails, farm use, long-distance touring, construction sites, mountain roads.
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
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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the ISO/TS 16949-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.
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.
Ask for the current catalogue and the specification sheet for this line.
