Air Filter for BMW 3 Series: Forged Aluminium
This air filter for the BMW 3 Series is specified around forged aluminium, 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 supplier who changed material without saying so, or reorders that did not match the approved sample. Both are specification problems, and both are preventable.
Specification
| Product | Air Filter |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Forged Aluminium |
| Typical use | Coastal Delivery |
| MOQ | 1,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 25-40 days after approval |
| Compliance | ISO/TS 16949 |
| Packing | 20 pieces per inner box, 1000 per carton |
Material options
- Neoprene — selected when the part is exposed to weather and road salt
- Cast Iron — selected when the part is exposed to weather and road salt
- Polypropylene — preferred when weight matters more than rigidity
- Semi-Metallic Compound — specified where the part sits close to a heat source
- Nylon 66 — chosen where wear resistance comes first
Processes available
- precision stamping
- powder coating
- electroplating
- anodising
- die casting
- cold forging
Fitment notes
Keep the old part until the new one is on the bench. Comparing them side by side settles questions a photograph never will.
Where it is used
The specification above is the one most often ordered for coastal delivery. Related applications include ride-hailing fleets, heavy load hauling, wet weather riding, track days, rural transport.
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. ISO/TS 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 ISO/TS 16949-compliant build instead of a fresh interpretation.
How long does sampling take?
Samples leave the factory in 7 working days, and each revision round adds about 3 days once you have seen the first piece.
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.
