Dual Mass Flywheel for BMW 3 Series: Tempered Glass
This dual mass flywheel for the BMW 3 Series is specified around tempered glass, 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 | Dual Mass Flywheel |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Tempered Glass |
| Typical use | Night Riding |
| MOQ | 1,000 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 15-55 days after approval |
| Compliance | IATF 16949 |
| Packing | 20 pieces per inner box, 500 per carton |
Material options
- Neoprene — used when the finish has to hold a coating
- Tempered Glass — the cost-effective default for volume programmes
- Titanium Alloy — used when the finish has to hold a coating
- Nylon 66 — chosen where wear resistance comes first
- Forged Aluminium — preferred when weight matters more than rigidity

Processes available
- powder coating
- laser cutting
- robot welding
- anodising
- assembly line testing
- heat treatment
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 night riding. Related applications include heavy load hauling, daily commuting, night riding, off-road trails, ride-hailing fleets.
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 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.
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 14 working days, and each revision round adds about 3 days once you have seen the first piece.
What testing is included?
Standard lots ship with dimensional and hardness reports. IATF 16949 documentation is issued with the shipment when your market requires it.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







