Air Box for Toyota Corolla: Natural Rubber
This air box for the Toyota Corolla is specified around natural rubber, 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 premature wear on the first batch. Both are specification problems, and both are preventable.

Specification
| Product | Air Box |
|---|---|
| Vehicle application | Toyota Corolla |
| Material / finish | Natural Rubber |
| Typical use | Mountain Roads |
| MOQ | 2,000 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 15-40 days after approval |
| Compliance | SAE J431 |
| Packing | 20 pieces per inner box, 1000 per carton |
Material options
- Natural Rubber — preferred when weight matters more than rigidity
- Neoprene — preferred when weight matters more than rigidity
- PU Leather — the cost-effective default for volume programmes
- Magnesium Alloy — the cost-effective default for volume programmes
- Powder Coated Steel — specified where the part sits close to a heat source

Processes available
- shot blasting
- laser cutting
- powder coating
- robot welding
- heat treatment
- assembly line testing
Fitment notes
Keep the old part until the new one is on the bench. Comparing them side by side settles questions a photograph never will.
Where it is used
The specification above is the one most often ordered for mountain roads. Related applications include night riding, mountain roads, construction sites, motocross, wet weather riding.
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
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.
What is the minimum order quantity?
The standard MOQ is 2000 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. SAE J431 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.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







