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Case Study: Brake Master Cylinder Supply for a marine equipment dealer in North America

Source:Case / Time:2026-09-18

Brake Master Cylinder for A marine equipment dealer in North America

A marine equipment dealer came to us with a brake master cylinder 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

  • Reorders that did not match the approved sample
  • A fitment that looked right on paper and failed on the bench
  • Lead time that slipped twice before bulk started

Brake Master Cylinder case study

What was specified

PartBrake Master Cylinder
ClientA marine equipment dealer
MarketNorth America
Volume2,000 pieces across 3 specifications
Base materialCast Iron
Sampling rounds3
Delivery window8 weeks from PO to ex-factory
ComplianceSAE J431

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.

Brake Master Cylinder production run

Result

  • 2,000 pieces delivered inside the 8-week window.
  • Unit cost held within 3.0% 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

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

Planning something similar?

Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.

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