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Case Study: Serpentine Belt Supply for a spare parts retailer in Latin America

Source:Case / Time:2026-09-18

Serpentine Belt for A spare parts retailer in Latin America

A spare parts retailer came to us with a serpentine belt programme for Latin 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 fitment that looked right on paper and failed on the bench
  • Documentation that arrived after the container shipped
  • Inconsistent hardness between lots

Serpentine Belt case study

What was specified

PartSerpentine Belt
ClientA spare parts retailer
MarketLatin America
Volume5,000 pieces across 2 specifications
Base materialCast Iron
Sampling rounds2
Delivery window4 weeks from PO to ex-factory
ComplianceCCC

How it was resolved

  1. The specification was rebuilt around Cast Iron 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.

Serpentine Belt production run

Result

  • 5,000 pieces delivered inside the 4-week window.
  • Unit cost held within 2.0% of the original quotation.
  • Inspection-related rejection stayed under 1.0%.
  • The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Approve a pre-production sample made from the actual bulk material. Substitute material behaves differently in service.

Planning something similar?

Ask for the current catalogue and the specification sheet for this line.

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