Wheel Cylinder for BMW 3 Series: Cast Iron
This wheel cylinder for the BMW 3 Series is specified around cast iron, 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 documentation that arrived after the container shipped. Both are specification problems, and both are preventable.
Specification
| Product | Wheel Cylinder |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Cast Iron |
| Typical use | Ride-Hailing Fleets |
| MOQ | 1,000 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | REACH |
| Packing | 20 pieces per inner box, 200 per carton |
Material options
- Polypropylene — chosen where wear resistance comes first
- EPDM Rubber — chosen where wear resistance comes first
- Natural Rubber — the cost-effective default for volume programmes
- Powder Coated Steel — specified where the part sits close to a heat source
- Zinc Plated Steel — the cost-effective default for volume programmes
Processes available
- laser cutting
- injection moulding
- precision stamping
- gravity casting
- cold forging
- robot welding
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 ride-hailing fleets. Related applications include airport ground fleets, roadside assistance, track days, mountain roads, daily commuting.
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
What testing is included?
Standard lots ship with dimensional and hardness reports. REACH documentation is issued with the shipment when your market requires it.
How long does sampling take?
Samples leave the factory in 14 working days, and each revision round adds about 3 days once you have seen the first piece.
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.
What is the minimum order quantity?
The standard MOQ is 1000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.
