Oil Filter for BMW 3 Series: Magnesium Alloy
This oil filter for the BMW 3 Series is specified around magnesium alloy, 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 lead time that slipped twice before bulk started, or inconsistent hardness between lots. Both are specification problems, and both are preventable.

Specification
| Product | Oil Filter |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Magnesium Alloy |
| Typical use | Coastal Delivery |
| MOQ | 3,000 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 25-40 days after approval |
| Compliance | REACH |
| Packing | 100 pieces per inner box, 1000 per carton |
Material options
- Powder Coated Steel — used when the finish has to hold a coating
- Natural Rubber — used when the finish has to hold a coating
- Stainless Steel — preferred when weight matters more than rigidity
- Silicone — preferred when weight matters more than rigidity
- Titanium Alloy — the cost-effective default for volume programmes

Processes available
- electroplating
- gravity casting
- sintering
- precision stamping
- shot blasting
- powder coating
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 coastal delivery. Related applications include ride-hailing fleets, airport ground fleets, track days, food delivery, mining sites.
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 the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the REACH-compliant build instead of a fresh interpretation.
What testing is included?
Standard lots ship with dimensional and hardness reports. REACH documentation is issued with the shipment when your market requires it.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 3000 pieces per line.
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.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.







