Automotive > Replacement Parts > Engines & Components > Ignition > Spark Plugs
NGK Iridium IX Spark Plugs Performance Combustion
Brand: NGK Iridium IX Spark Plugs Performance Combustion
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Audited BOM: 5 Components
RMA Chain & Defect Intelligence
Root cause causal graph linking factory engineering flaws to verified consumer return reasons.
⚡ Causal Link: Defect to Consumer Return
Cracks in the ceramic insulator (ENG-002) lead to ignition failures (RMA-002) and are reported by customers (REV-002, REV-006), indicating a point of fragility in the insulator's engineering or quality control.
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