Piston for BMW X5: Stainless Steel
This piston for the BMW X5 is specified around stainless steel, 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 a fitment that looked right on paper and failed on the bench. Both are specification problems, and both are preventable.
Specification
| Product | Piston |
|---|---|
| Vehicle application | BMW X5 |
| Material / finish | Stainless Steel |
| Typical use | Off-Road Trails |
| MOQ | 1,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | ISO 9001 |
| Packing | 50 pieces per inner box, 1000 per carton |
Material options
- Reinforced Nylon — specified where the part sits close to a heat source
- Magnesium Alloy — used when the finish has to hold a coating
- PU Leather — specified where the part sits close to a heat source
- Neoprene — chosen where wear resistance comes first
- Bronze — chosen where wear resistance comes first
Processes available
- anodising
- sintering
- shot blasting
- die casting
- heat treatment
- assembly line testing
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 off-road trails. Related applications include long-distance touring, weekend riding, night riding, roadside assistance, coastal delivery.
Quality and packing
- In-line inspection with AQL 1.5 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 ISO 9001-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.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 1000 pieces per line.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.
