Differential for GMC Sierra: Semi-Metallic Compound
This differential for the GMC Sierra is specified around semi-metallic compound, 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 reorders that did not match the approved sample, or lead time that slipped twice before bulk started. Both are specification problems, and both are preventable.
Specification
| Product | Differential |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Semi-Metallic Compound |
| Typical use | Motocross |
| MOQ | 200 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 20-40 days after approval |
| Compliance | DOT |
| Packing | 10 pieces per inner box, 500 per carton |
Material options
- Chromed Steel — preferred when weight matters more than rigidity
- Cast Iron — selected when the part is exposed to weather and road salt
- Stainless Steel — specified where the part sits close to a heat source
- Tempered Glass — chosen where wear resistance comes first
- PVC Coated Fabric — selected when the part is exposed to weather and road salt
Processes available
- injection moulding
- anodising
- gravity casting
- shot blasting
- surface grinding
- laser cutting
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 motocross. Related applications include motocross, food delivery, weekend riding, mining sites, rural transport.
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
What testing is included?
Standard lots ship with dimensional and hardness reports. DOT documentation is issued with the shipment when your market requires it.
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 DOT-compliant build instead of a fresh interpretation.
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.
