Crankshaft for GMC Sierra: Zinc Plated Steel
This crankshaft 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 a fitment that looked right on paper and failed on the bench, or warranty claims traced back to a single lot. Both are specification problems, and both are preventable.
Specification
| Product | Crankshaft |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Zinc Plated Steel |
| Typical use | Off-Road Trails |
| MOQ | 3,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 20-30 days after approval |
| Compliance | ECE R90 |
| Packing | 50 pieces per inner box, 1000 per carton |
Material options
- High Density Foam — selected when the part is exposed to weather and road salt
- Neoprene — chosen where wear resistance comes first
- Ceramic Composite — used when the finish has to hold a coating
- Carbon Fibre Composite — chosen where wear resistance comes first
- Cast Iron — selected when the part is exposed to weather and road salt
Processes available
- anodising
- precision stamping
- gravity casting
- rubber vulcanisation
- injection moulding
- powder coating
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 off-road trails. Related applications include rental fleets, night riding, daily commuting, motocross, heavy load hauling.
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
What is the minimum order quantity?
The standard MOQ is 3000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
What testing is included?
Standard lots ship with dimensional and hardness reports. ECE R90 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 ECE R90-compliant build instead of a fresh interpretation.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.
