Case Study: Spark Plug Supply for an agricultural cooperative in Central America

Spark Plug for An agricultural cooperative in Central America

An agricultural cooperative came to us with a spark plug programme for Central America. The brief was ordinary and unforgiving at the same time: a fixed launch window, a landed cost that had to survive freight and duty, and a part that had to match an existing sample. This case records what was specified, what went wrong in sampling and how the bulk order landed.

The starting point

• Premature wear on the first batch
• Documentation that arrived after the container shipped
• Inconsistent hardness between lots

What was specified

How it was resolved

1. The specification was rebuilt around Polypropylene and the tolerance locked before bulk.
2. A pre-production sample was approved and kept as the golden reference.
3. Production ran with in-line inspection and a mid-run photo report.
4. Cartons were packed to the client's own barcode and ratio specification.
5. Documentation shipped with the goods instead of after them.

Result

• 10,000 pieces delivered inside the 4-week window.
• Unit cost held within 1.5% of the original quotation.
• Inspection-related rejection stayed under 1.5%.
• The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Keep one accountable owner on both sides. Most delays come from hand-offs, not from machines.

Planning something similar?

Send the specification you are working to and we will confirm what we can match, what we would change and why.