Restore hydraulic control with the Quality-Built Brake Master Cylinder, part number NM4341. This key braking system component converts pedal force into hydraulic pressure, distributing fluid to the front and rear brakes. Built with precision-bored aluminum or cast iron and factory-calibrated piston seals, the Quality-Built master cylinder offers leak-proof performance and responsive braking. Each unit is pressure tested and includes reservoir or grommets where applicable. Ideal for restoring brake pedal feel and consistent stopping power. SEO keywords: brake master cylinder assembly, hydraulic brake pump, pedal fluid controller, OE brake master replacement.