Air Suspension Bag for BMW X5: Natural Rubber
This air suspension bag for the BMW X5 is specified around natural rubber, 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 inconsistent hardness between lots, or packing that arrived crushed at the port. Both are specification problems, and both are preventable.

Specification
| Product | Air Suspension Bag |
|---|---|
| Vehicle application | BMW X5 |
| Material / finish | Natural Rubber |
| Typical use | Food Delivery |
| MOQ | 1,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 20-55 days after approval |
| Compliance | SAE J431 |
| Packing | 50 pieces per inner box, 200 per carton |
Material options
- Cast Iron — preferred when weight matters more than rigidity
- Powder Coated Steel — used when the finish has to hold a coating
- Natural Rubber — chosen where wear resistance comes first
- Reinforced Nylon — the cost-effective default for volume programmes
- Polypropylene — the cost-effective default for volume programmes

Processes available
- shot blasting
- die casting
- precision stamping
- rubber vulcanisation
- CNC machining
- 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 food delivery. Related applications include mining sites, heavy load hauling, weekend riding, passenger transport, 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. SAE J431 documentation is issued with the shipment when your market requires it.
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.
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.
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.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







