Throttle Body for BMW 3 Series: Chromed Steel
This throttle body for the BMW 3 Series is specified around chromed 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 packing that arrived crushed at the port, or documentation that arrived after the container shipped. Both are specification problems, and both are preventable.

Specification
| Product | Throttle Body |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Chromed Steel |
| Typical use | Rental Fleets |
| MOQ | 1,000 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 15-55 days after approval |
| Compliance | SAE J431 |
| Packing | 10 pieces per inner box, 200 per carton |
Material options
- Natural Rubber — selected when the part is exposed to weather and road salt
- Brass — used when the finish has to hold a coating
- Sintered Metal — preferred when weight matters more than rigidity
- Semi-Metallic Compound — used when the finish has to hold a coating
- Powder Coated Steel — specified where the part sits close to a heat source

Processes available
- heat treatment
- rubber vulcanisation
- laser cutting
- ultrasonic cleaning
- die casting
- powder coating
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 rental fleets. Related applications include food delivery, roadside assistance, heavy load hauling, farm use, mountain roads.
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
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 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.
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.
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 part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







