Spark Plug for Toyota Corolla: High Density Foam
This spark plug for the Toyota Corolla is specified around high density foam, 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 a specification nobody had written down. Both are specification problems, and both are preventable.

Specification
| Product | Spark Plug |
|---|---|
| Vehicle application | Toyota Corolla |
| Material / finish | High Density Foam |
| Typical use | Airport Ground Fleets |
| MOQ | 3,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | DOT |
| Packing | 50 pieces per inner box, 500 per carton |
Material options
- Carbon Fibre Composite — chosen where wear resistance comes first
- Tempered Glass — the cost-effective default for volume programmes
- Stainless Steel — the cost-effective default for volume programmes
- Polypropylene — used when the finish has to hold a coating
- Carbon Steel — specified where the part sits close to a heat source

Processes available
- powder coating
- ultrasonic cleaning
- surface grinding
- electroplating
- die casting
- CNC machining
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 airport ground fleets. Related applications include security patrols, mining sites, long-distance touring, track days, delivery fleets.
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 testing is included?
Standard lots ship with dimensional and hardness reports. DOT documentation is issued with the shipment when your market requires it.
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.
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.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 3000 pieces per line.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.







