Cylinder Head for GMC Sierra: Zinc Plated Steel
This cylinder head for the GMC Sierra is specified around zinc plated 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 packing that arrived crushed at the port. Both are specification problems, and both are preventable.
Specification
| Product | Cylinder Head |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Zinc Plated Steel |
| Typical use | Rental Fleets |
| MOQ | 200 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 25-55 days after approval |
| Compliance | IATF 16949 |
| Packing | 100 pieces per inner box, 200 per carton |
Material options
- Zinc Plated Steel — used when the finish has to hold a coating
- Anodised Aluminium — chosen where wear resistance comes first
- Ceramic Composite — used when the finish has to hold a coating
- Aluminium Alloy — preferred when weight matters more than rigidity
- Tempered Glass — chosen where wear resistance comes first
Processes available
- CNC machining
- cold forging
- ultrasonic cleaning
- injection moulding
- powder coating
- gravity casting
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 rental fleets. Related applications include track days, night riding, mining sites, urban courier work, adventure travel.
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 IATF 16949-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.
What is the minimum order quantity?
The standard MOQ is 200 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
How is packing specified?
Individual packing, inner box quantity and carton marking are confirmed at quotation stage so the cartons arrive ready for your warehouse.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.
