Car Speaker for GMC Sierra: Powder Coated Steel
This car speaker for the GMC Sierra is specified around powder coated 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 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 | Car Speaker |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Powder Coated Steel |
| Typical use | Long-Distance Touring |
| MOQ | 500 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | SAE J431 |
| Packing | 10 pieces per inner box, 200 per carton |
Material options
- PVC Coated Fabric — specified where the part sits close to a heat source
- Chromed Steel — used when the finish has to hold a coating
- Carbon Steel — specified where the part sits close to a heat source
- Zinc Plated Steel — chosen where wear resistance comes first
- Magnesium Alloy — the cost-effective default for volume programmes
Processes available
- heat treatment
- shot blasting
- powder coating
- electroplating
- die casting
- surface grinding
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 long-distance touring. Related applications include coastal delivery, farm use, food delivery, heavy load hauling, mining sites.
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
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 500 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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the SAE J431-compliant build instead of a fresh interpretation.
Send the specification you are working to and we will confirm what we can match, what we would change and why.
