Wheel Cylinder for GMC Sierra: Magnesium Alloy
This wheel cylinder for the GMC Sierra is specified around magnesium alloy, 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 a supplier who changed material without saying so. Both are specification problems, and both are preventable.
Specification
| Product | Wheel Cylinder |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Magnesium Alloy |
| Typical use | Ride-Hailing Fleets |
| MOQ | 200 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 25-30 days after approval |
| Compliance | DOT |
| Packing | 50 pieces per inner box, 200 per carton |
Material options
- Anodised Aluminium — preferred when weight matters more than rigidity
- Bronze — selected when the part is exposed to weather and road salt
- Forged Aluminium — specified where the part sits close to a heat source
- ABS Plastic — specified where the part sits close to a heat source
- Kevlar Composite — chosen where wear resistance comes first
Processes available
- ultrasonic cleaning
- cold forging
- surface grinding
- rubber vulcanisation
- precision stamping
- anodising
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 ride-hailing fleets. Related applications include mining sites, track days, delivery fleets, off-road trails, 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 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.
How long does sampling take?
Samples leave the factory in 14 working days, and each revision round adds about 5 days once you have seen the first piece.
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.
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.
Send the specification you are working to and we will confirm what we can match, what we would change and why.
