Piston Ring for BMW 3 Series: Silicone
This piston ring for the BMW 3 Series is specified around silicone, 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 warranty claims traced back to a single lot, or packing that arrived crushed at the port. Both are specification problems, and both are preventable.
Specification
| Product | Piston Ring |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Silicone |
| Typical use | Heavy Load Hauling |
| MOQ | 500 pieces per specification |
| Sampling | 10 working days, 3 days per revision |
| Bulk lead time | 25-30 days after approval |
| Compliance | REACH |
| Packing | 50 pieces per inner box, 1000 per carton |
Material options
- Aluminium Alloy — the cost-effective default for volume programmes
- Bronze — chosen where wear resistance comes first
- Silicone — preferred when weight matters more than rigidity
- Neoprene — chosen where wear resistance comes first
- Anodised Aluminium — selected when the part is exposed to weather and road salt
Processes available
- powder coating
- gravity casting
- sintering
- rubber vulcanisation
- cold forging
- precision stamping
Fitment notes
Check whether the mounting points on your market version match the catalogue drawing — regional variants are the usual cause of a wrong first order.
Where it is used
The specification above is the one most often ordered for heavy load hauling. Related applications include construction sites, weekend riding, security patrols, mountain roads, motocross.
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
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 500 pieces per line.
What is the minimum order quantity?
The standard MOQ is 500 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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.
How long does sampling take?
Samples leave the factory in 10 working days, and each revision round adds about 3 days once you have seen the first piece.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.
