Case Study: Catalytic Converter Supply for a bus operator in North America

Catalytic Converter for A bus operator in North America

A bus operator came to us with a catalytic converter programme for North 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

• A supplier who changed material without saying so
• Documentation that arrived after the container shipped
• Inconsistent hardness between lots

What was specified

How it was resolved

1. The specification was rebuilt around EPDM Rubber 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

• 2,000 pieces delivered inside the 5-week window.
• Unit cost held within 3.0% of the original quotation.
• Inspection-related rejection stayed under 2.0%.
• The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Fix the specification count early. Adding variants after production starts is the most expensive change a client can request.

Planning something similar?

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